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Quantum friction between graphene sheets (2017)

M. Belén Farias, César D. Fosco, Fernando C. Lombardo, and Francisco D. Mazzitelli

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-03-18

Beschreibung: Author(s): M. Belén Farias, César D. Fosco, Fernando C. Lombardo, and Francisco D. Mazzitelli We study the Casimir friction phenomenon in a system consisting of two flat, infinite, and parallel graphene sheets, which are coupled to the vacuum electromagnetic (EM) field. Those couplings are implemented, in the description we use, by means of specific terms in the effective action for the EM f… [Phys. Rev. D 95, 065012] Published Thu Mar 16, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Spontaneous excitation of an atom in a Kerr spacetime (2017)

G. Menezes

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-03-21

Beschreibung: Author(s): G. Menezes We consider radiative processes of an atom in a rotating black-hole background. We assume the atom, represented by a hypothetical two-level system, is coupled via a monopole interaction with a massless quantum scalar field prepared in each one of the usual physical vacuum states of interest. We cons… [Phys. Rev. D 95, 065015] Published Mon Mar 20, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Interacting scale invariant but nonconformal field theories (2017)

Yu Nakayama

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-03-21

Beschreibung: Author(s): Yu Nakayama There is a dilemma in constructing interacting scale invariant Euclidean field theories that are not conformal invariant. On one hand, scale invariance without conformal invariance seems more generic by requiring only a smaller symmetry. On the other hand, the existence of a nonconserved current wit… [Phys. Rev. D 95, 065016] Published Mon Mar 20, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Variation of entanglement entropy and mutual information in fermion-fermion scattering (2017)

Jinbo Fan, Yanbin Deng, and Yong-Chang Huang

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-03-22

Beschreibung: Author(s): Jinbo Fan, Yanbin Deng, and Yong-Chang Huang We study the behavior of entanglement between different degrees of freedom of scattering fermions, based on an exemplary QED scattering process e + e − → μ + μ − . The variation of entanglement entropy between two fermions from an initial state to the final state was computed, with respect to different entan… [Phys. Rev. D 95, 065017] Published Tue Mar 21, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Fluctuations in quantum mechanics and field theories from a new version of semiclassical theory. II. (2017)

M. A. Escobar-Ruiz, E. Shuryak, and A. V. Turbiner

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): M. A. Escobar-Ruiz, E. Shuryak, and A. V. Turbiner This is the second paper on the semiclassical approach based on the density matrix given by the Euclidean time path integral with fixed coinciding end points. The classical path, interpolating between this point and the classical vacuum (called a “flucton”), as well as systematic one- and two-loop c... [Phys. Rev. D 96, 045005] Published Mon Aug 07, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Canonical quantization of nonlinear sigma models with a theta term and applications to symmetry-protected topological phases (2017)

Matthew F. Lapa and Taylor L. Hughes

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-08-16

Beschreibung: Author(s): Matthew F. Lapa and Taylor L. Hughes We canonically quantize O ( D + 2 ) nonlinear sigma models (NLSMs) with a theta term on arbitrary smooth, closed, connected, oriented D -dimensional spatial manifolds M , with the goal of proving the suitability of these models for describing symmetry-protected topological (SPT) phases of bosons in D spati... [Phys. Rev. D 96, 045010] Published Tue Aug 15, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Crystal structures in generalized Skyrme model (2017)

I. Perapechka and Ya. Shnir

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-08-23

Beschreibung: Author(s): I. Perapechka and Ya. Shnir We investigate the properties of triply periodic Skyrme crystals in the generalized Skyrme model L 6 + L 4 + L 2 + L 0 with higher-derivative terms up to sixth order. Three different symmetry breaking potential terms L 0 are considered, the generalized pion mass term, double-vacuum potential, and mixed potenti... [Phys. Rev. D 96, 045013] Published Thu Aug 17, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Entanglement entropy for 2D gauge theories with matters (2017)

Sinya Aoki, Norihiro Iizuka, Kotaro Tamaoka, and Tsuyoshi Yokoya

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-08-31

Beschreibung: Author(s): Sinya Aoki, Norihiro Iizuka, Kotaro Tamaoka, and Tsuyoshi Yokoya We investigate the entanglement entropy in 1 + 1 -dimensional S U ( N ) gauge theories with various matter fields using the lattice regularization. Here we use extended Hilbert space definition for entanglement entropy, which contains three contributions; (1) classical Shannon entropy associated with super... [Phys. Rev. D 96, 045020] Published Wed Aug 30, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Conformal correlators and blocks with spinors in general dimensions (2017)

Hiroshi Isono

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-09-16

Beschreibung: Author(s): Hiroshi Isono We compute conformal correlation functions with spinor, tensor, and spinor-tensor primary fields in general dimensions with Euclidean and Lorentzian metrics. The spinors are taken to be Dirac spinors, which exist for any dimensions. For this, the embedding space formalism is employed and the polariz... [Phys. Rev. D 96, 065011] Published Fri Sep 15, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Rényi mutual information for a free scalar field in even dimensions (2017)

Bin Chen and Jiang Long

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): Bin Chen and Jiang Long We compute the Rényi mutual information of two disjoint spheres in free massless scalar theory in even dimensions higher than 2. The spherical twist operator in a conformal field theory can be expanded into the sum of local primary operators and their descendants. We analyze the primary operators in... [Phys. Rev. D 96, 045006] Published Tue Aug 08, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Assessing degrees of entanglement of phonon states in atomic Bose gases through the measurement of commuting observables (2017)

Scott Robertson, Florent Michel, and Renaud Parentani

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-08-17

Beschreibung: Author(s): Scott Robertson, Florent Michel, and Renaud Parentani We show that measuring commuting observables can be sufficient to assess that a bipartite state is entangled according to either nonseparability or the stronger criterion of “steerability.” Indeed, the measurement of a single observable might reveal the strength of the interferences between the two ... [Phys. Rev. D 96, 045012] Published Wed Aug 16, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Chiral vortical effect for bosons (2017)

Artur Avkhadiev and Andrey V. Sadofyev

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-08-26

Beschreibung: Author(s): Artur Avkhadiev and Andrey V. Sadofyev The thermal contribution to the chiral vortical effect is believed to be related to the axial anomaly in external gravitational fields. We use the universality of the spin-gravity interaction to extend this idea to a wider set of phenomena. We consider the Kubo formula at weak coupling for the spin ... [Phys. Rev. D 96, 045015] Published Fri Aug 25, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Resonance interatomic energy in a Schwarzschild spacetime (2017)

Wenting Zhou and Hongwei Yu

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-08-31

Beschreibung: Author(s): Wenting Zhou and Hongwei Yu We study, in the Schwarzschild spacetime, the resonance interatomic energy (RIE) of two static identical atoms with an interatomic separation L along the radial direction and correlated by a symmetric/antisymmetric entangled state. The atoms are assumed to be coupled to massless scalar fields in the... [Phys. Rev. D 96, 045018] Published Wed Aug 30, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Emergent anyon distribution in the Unruh effect (2017)

Satoshi Ohya

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-08-31

Beschreibung: Author(s): Satoshi Ohya We point out that, when the Unruh-DeWitt detector couples to a scalar primary operator of d -dimensional conformal field theory, the detector’s power spectrum generally obeys the thermal distribution for ( 1 + 1 )-dimensional anyons. [Phys. Rev. D 96, 045017] Published Wed Aug 30, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Casimir effects in Lorentz-violating scalar field theory (2017)

M. B. Cruz, E. R. Bezerra de Mello, and A. Yu. Petrov

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-08-31

Beschreibung: Author(s): M. B. Cruz, E. R. Bezerra de Mello, and A. Yu. Petrov In this paper, we consider a Lorentz-breaking extension of the theory for a real massive scalar quantum field in the region between two large parallel plates, with our manner to break the Lorentz symmetry being C P T even and aetherlike. For this system, we calculated the Casimir energy considering di... [Phys. Rev. D 96, 045019] Published Wed Aug 30, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Dynamical Casimir effect and loop corrections (2017)

E. T. Akhmedov and S. O. Alexeev

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-09-09

Beschreibung: Author(s): E. T. Akhmedov and S. O. Alexeev We calculate quantum loop corrections to the stress-energy flux caused by moving mirrors. We consider massless, self-interacting, ϕ 4 , real scalar theory. In these calculations we encounter new and quite unexpected subtleties due to the absence of global hyperbolicity in the presence of mirrors. We a... [Phys. Rev. D 96, 065001] Published Fri Sep 08, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Global $SU(3{)}_{C}×SU(2{)}_{L}×U(1{)}_{Y}$ linear sigma model: Axial-vector Ward-Takahashi identities and decoupling of certain heavy BSM particles due to the Goldstone theorem (2017)

Bryan W. Lynn and Glenn D. Starkman

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-09-13

Beschreibung: Author(s): Bryan W. Lynn and Glenn D. Starkman In the S U ( 2 ) L × S U ( 2 ) R linear sigma model with partially conserved axial-vector currents, a tower of Ward-Takahashi identities (WTI) have long been known to give relations among 1- scalar -particle-irreducible ( 1 − ϕ − I ) Green’s functions, and among I- scalar -particle-reducible ( 1 − ϕ − R ) transition-matrix (T-... [Phys. Rev. D 96, 065006] Published Tue Sep 12, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Onset of many-body chaos in the $O(N)$ model (2017)

Debanjan Chowdhury and Brian Swingle

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-09-13

Beschreibung: Author(s): Debanjan Chowdhury and Brian Swingle The growth of commutators of initially commuting local operators diagnoses the onset of chaos in quantum many-body systems. We compute such commutators of local field operators with N components in the ( 2 + 1 )-dimensional O ( N ) nonlinear sigma model to leading order in 1 / N . The system is taken to be in... [Phys. Rev. D 96, 065005] Published Tue Sep 12, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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First order Galilean superfluid dynamics (2017)

Nabamita Banerjee, Suvankar Dutta, and Akash Jain

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-09-13

Beschreibung: Author(s): Nabamita Banerjee, Suvankar Dutta, and Akash Jain We study dynamics of an (anomalous) Galilean superfluid up to first order in derivative expansion, both in parity-even and parity-odd sectors. We construct a relativistic system—null superfluid, which is a null fluid (introduced in N. Banerjee, S. Dutta, and A. Jain Akash, [ Phys. Rev. D 93 , 105020 (... [Phys. Rev. D 96, 065004] Published Tue Sep 12, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Flow of the $□R$ Weyl anomaly (2017)

Vladimir Prochazka and Roman Zwicky

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-08-17

Beschreibung: Author(s): Vladimir Prochazka and Roman Zwicky An important aspect of Weyl anomalies is that they encode information on the irreversibility of the renormalization group flow. We consider, Δ b ¯ = b ¯ UV − b ¯ IR , the difference of the ultraviolet and infrared value of the □ R -term of the Weyl anomaly. The quantity is related to the fourth moment of the tra... [Phys. Rev. D 96, 045011] Published Wed Aug 16, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Classifying Galileon $p$-form theories (2017)

Cédric Deffayet, Sebastian Garcia-Saenz, Shinji Mukohyama, and Vishagan Sivanesan

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-08-25

Beschreibung: Author(s): Cédric Deffayet, Sebastian Garcia-Saenz, Shinji Mukohyama, and Vishagan Sivanesan We provide a complete classification of all abelian gauge invariant p -form theories with equations of motion depending only on the second derivative of the field—the p -form analogues of the Galileon scalar field theory. We construct explicitly the nontrivial actions that exist for spacetime dimensio... [Phys. Rev. D 96, 045014] Published Thu Aug 24, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Nonassociative Snyder ${ϕ}^{4}$ quantum field theory (2017)

Stjepan Meljanac, Salvatore Mignemi, Josip Trampetic, and Jiangyang You

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-09-02

Beschreibung: Author(s): Stjepan Meljanac, Salvatore Mignemi, Josip Trampetic, and Jiangyang You In this article, we define and quantize a truncated form of the nonassociative and noncommutative Snyder ϕ 4 field theory using the functional method in momentum space. More precisely, the action is approximated by expanding up to the linear order in the Snyder deformation parameter β , producing an e... [Phys. Rev. D 96, 045021] Published Thu Aug 31, 2017

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Global ${U(1)}_{Y}⊗\mathrm{BRST}$ symmetry and the LSS theorem: Ward-Takahashi identities governing Green’s functions, on-shell $T$-matrix elements, and the effective potential in the scalar sector of the spontaneously broken extended Abelian Higgs model (2017)

Bryan W. Lynn and Glenn D. Starkman

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-09-13

Beschreibung: Author(s): Bryan W. Lynn and Glenn D. Starkman The weak-scale U ( 1 ) Y Abelian Higgs model (AHM) is the simplest spontaneous symmetry breaking (SSB) gauge theory: a scalar ϕ = 1 2 ( H + i π ) ≡ 1 2 H ˜ e i π ˜ / ⟨ H ⟩ and a vector A μ . The extended AHM (E-AHM) adds certain heavy ( M Φ 2 , M ψ 2 ∼ M Heavy 2 ≫ ⟨ H ⟩ 2 ∼ m Weak 2 ) spin S = 0 scalars Φ and S = 1 2 fermions ψ . In Lorenz gauge, ∂ μ A μ = 0 ... [Phys. Rev. D 96, 065003] Published Tue Sep 12, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Classical gluon and graviton radiation from the bi-adjoint scalar double copy (2017)

Walter D. Goldberger, Siddharth G. Prabhu, and Jedidiah O. Thompson

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-09-15

Beschreibung: Author(s): Walter D. Goldberger, Siddharth G. Prabhu, and Jedidiah O. Thompson The authors construct perturbative solutions in a cubic scalar field theory which can be mapped to classical solutions in gauge theories using the same “double copy” correspondence that connects gauge theory amplitudes to gravity amplitudes. This provides the first step (leading order in perturbation theory) for a correspondence between gravity and a scalar field theory with much simpler Feynman rules. [Phys. Rev. D 96, 065009] Published Thu Sep 14, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Nonperturbative analysis of entanglement harvesting from coherent field states (2017)

Petar Simidzija and Eduardo Martín-Martínez

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-09-15

Beschreibung: Author(s): Petar Simidzija and Eduardo Martín-Martínez We study (nonperturbatively) the interactions of delta-coupled detectors with coherent states of a scalar field. We show that the time-evolved density matrix spectra of (i) a single detector, (ii) two detectors, and (iii) the partial transpose of the latter, are all independent of which coherent sta... [Phys. Rev. D 96, 065008] Published Thu Sep 14, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Soft graviton emission at high and low energies in Yukawa and scalar theories (2017)

Hualong Gervais

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-09-13

Beschreibung: Author(s): Hualong Gervais We study corrections to the soft graviton theorem at all loop orders in Yukawa and scalar theories, both in the high-energy and low-energy regions. It is found that the tree-level soft theorem is corrected by matrix elements coupled to the Riemann curvature tensor of linearized gravity. Further corr... [Phys. Rev. D 96, 065007] Published Tue Sep 12, 2017

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From worldline to quantum superconformal mechanics with and without oscillatorial terms: $D(2,1;α)$ and $sl(2|1)$ models (2017)

I. E. Cunha, N. L. Holanda, and F. Toppan

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-09-21

Beschreibung: Author(s): I. E. Cunha, N. L. Holanda, and F. Toppan In this paper, we quantize superconformal σ models defined by worldline supermultiplets. Two types of superconformal mechanics, with and without a De Alfaro Fubini Furlan (DFF) term, are considered. Without a DFF term (Calogero potential only), the supersymmetry is unbroken. The models with a DFF te... [Phys. Rev. D 96, 065014] Published Wed Sep 20, 2017

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Perturbative unitarity of Lee-Wick quantum field theory (2017)

Damiano Anselmi and Marco Piva

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): Damiano Anselmi and Marco Piva We study the perturbative unitarity of the Lee-Wick models, formulated as nonanalytically Wick rotated Euclidean theories. The complex energy plane is divided into disconnected regions and the values of a loop integral in the various regions are related to one another by a nonanalytic procedure. We ... [Phys. Rev. D 96, 045009] Published Wed Aug 09, 2017

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Electromagnetic duality and entanglement anomalies (2017)

William Donnelly, Ben Michel, and Aron C. Wall

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): William Donnelly, Ben Michel, and Aron C. Wall Duality is an indispensable tool for describing the strong-coupling dynamics of gauge theories. However, its actual realization is often quite subtle: quantities such as the partition function can transform covariantly, with degrees of freedom rearranged in a nonlocal fashion. We study this phenomen... [Phys. Rev. D 96, 045008] Published Mon Aug 07, 2017

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Nonequilibrium dressing in a cavity with a movable reflecting mirror (2017)

Federico Armata, M. S. Kim, Salvatore Butera, Lucia Rizzuto, and Roberto Passante

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): Federico Armata, M. S. Kim, Salvatore Butera, Lucia Rizzuto, and Roberto Passante We consider a movable mirror coupled to a one-dimensional massless scalar field in a cavity. Both the field and the mirror’s mechanical degrees of freedom are described quantum mechanically, and they can interact with each other via the radiation pressure operator. We investigate the dynamical evolu... [Phys. Rev. D 96, 045007] Published Mon Aug 07, 2017

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Conformal perturbation theory (2017)

Andrea Amoretti and Nicodemo Magnoli

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-08-31

Beschreibung: Author(s): Andrea Amoretti and Nicodemo Magnoli Statistical systems near a classical critical point have been intensively studied from both theoretical and experimental points of view. In particular, correlation functions are of relevance in comparing theoretical models with the experimental data of real systems. In order to compute physical quan... [Phys. Rev. D 96, 045016] Published Tue Aug 29, 2017

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Massive charged Dirac fields around Reissner-Nordström black holes: Quasibound states and long-lived modes (2017)

Yang Huang, Dao-Jun Liu, Xiang-hua Zhai, and Xin-zhou Li

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-09-12

Beschreibung: Author(s): Yang Huang, Dao-Jun Liu, Xiang-hua Zhai, and Xin-zhou Li The behavior of a massive charged test Dirac field in the background of a Reissner-Nordström black hole is investigated. Especially, we obtain the frequencies of quasibound states by solving the Dirac equation numerically both in time and frequency domain. Our results suggest that although the absen... [Phys. Rev. D 96, 065002] Published Mon Sep 11, 2017

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Gravitational localization of scalar zero modes in SU(5)×Z_{2} branes (2017)

Nelson Pantoja and Rossana Rojas

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-02-22

Beschreibung: Author(s): Nelson Pantoja and Rossana Rojas The fluctuations of five-dimensional self-gravitating non-Abelian kinks which arise from the breaking of the S U ( 5 ) × Z 2 -symmetric theory are analyzed within the context of braneworlds. While tensor and vector sectors of these fluctuations behave like its counterparts in the standard Abelian Z 2 kinks, … [Phys. Rev. D 95, 045008] Published Tue Feb 21, 2017

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Inhomogeneous charged pion condensation in chiral asymmetric dense quark matter in the framework of a NJL_{2} model (2017)

T. G. Khunjua, K. G. Klimenko, R. N. Zhokhov, and V. C. Zhukovsky

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-06-01

Beschreibung: Author(s): T. G. Khunjua, K. G. Klimenko, R. N. Zhokhov, and V. C. Zhukovsky In this paper we investigate the phase structure of a ( 1 + 1 )-dimensional quark model with four-quark interaction and in the presence of baryon ( μ B ), isospin ( μ I ), and chiral isospin ( μ I 5 ) chemical potentials. Spatially inhomogeneous chiral density wave (for chiral condensate) and single wave (for cha… [Phys. Rev. D 95, 105010] Published Wed May 31, 2017

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Analog cosmological particle generation in a superconducting circuit (2017)

Zehua Tian, Jiliang Jing, and Andrzej Dragan

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-06-13

Beschreibung: Author(s): Zehua Tian, Jiliang Jing, and Andrzej Dragan We propose the use of a waveguidelike transmission line based on direct-current superconducting quantum interference devices (dc-SQUID) and demonstrate that the node flux in this transmission line behaves in the same way as quantum fields in an expanding (or contracting) universe. We show how to det… [Phys. Rev. D 95, 125003] Published Mon Jun 12, 2017

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Supersymmetric Galileons and auxiliary fields in 2+1 dimensions (2017)

Jose M. Queiruga

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-06-09

Beschreibung: Author(s): Jose M. Queiruga In this work, we study various aspects of supersymmetric three-dimensional higher-derivative field theories. We classify all possible models without derivative terms of the auxiliary field in the fermionic sector and find that scalar field theories of the form P ( X , ϕ ) , where X = − ( ∂ ϕ ) 2 / 2 , belong to thi… [Phys. Rev. D 95, 125001] Published Thu Jun 08, 2017

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Quantum backreaction on classical dynamics (2017)

Tanmay Vachaspati

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-06-10

Beschreibung: Author(s): Tanmay Vachaspati Motivated by various systems in which quantum effects occur in classical backgrounds, we consider the dynamics of a classical particle as described by a coherent state that is coupled to a quantum bath via biquadratic interactions. We evaluate the resulting quantum dissipation of the motion of the c… [Phys. Rev. D 95, 125002] Published Fri Jun 09, 2017

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Non-Abelian strings in N=1 supersymmetric QCD (2017)

E. Ievlev and A. Yung

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-06-13

Beschreibung: Author(s): E. Ievlev and A. Yung Non-Abelian flux tubes (strings) are well studied in N = 2 supersymmetric QCD in ( 3 + 1 ) dimensions. In addition to translational zero modes they have also orientational moduli associated with rotations of their fluxes inside a non-Abelian group. The dynamics of the orientational moduli is described by … [Phys. Rev. D 95, 125004] Published Mon Jun 12, 2017

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Fixed points and the spontaneous breaking of scale invariance (2017)

Daniel F. Litim, Edouard Marchais, and Péter Mati

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-06-27

Beschreibung: Author(s): Daniel F. Litim, Edouard Marchais, and Péter Mati We investigate critical N -component scalar field theories and the spontaneous breaking of scale invariance in three dimensions using functional renormalization. Global and local renormalization group flows are solved analytically in the infinite N limit to establish the exact phase diagram of the th... [Phys. Rev. D 95, 125006] Published Mon Jun 26, 2017

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Afterglow of the dynamical Schwinger process: Soft photons amass (2017)

A. Otto and B. Kämpfer

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-06-28

Beschreibung: Author(s): A. Otto and B. Kämpfer We consider the conversion of an electric field into photons as a secondary probe of the dynamical Schwinger process. In spatially homogeneous electric fields, quantum fluctuations of electron-positron ( e + e − ) pairs are lifted on the mass shell leaving asymptotically a small finite pair density. The ... [Phys. Rev. D 95, 125007] Published Tue Jun 27, 2017

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Soft photon theorem for high energy amplitudes in Yukawa and scalar theories (2017)

Hualong Gervais

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-06-29

Beschreibung: Author(s): Hualong Gervais We study the emission of soft photons coupling to high energy fixed angle scattering processes at first order in the electromagnetic coupling but to all loop orders in a class of theories without soft divergences, including massive and massless Yukawa and scalar theories. We adapt a method introduce... [Phys. Rev. D 95, 125009] Published Wed Jun 28, 2017

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New electromagnetic memories and soft photon theorems (2017)

Pujian Mao, Hao Ouyang, Jun-Bao Wu, and Xiaoning Wu

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-07-01

Beschreibung: Author(s): Pujian Mao, Hao Ouyang, Jun-Bao Wu, and Xiaoning Wu In this paper, we present a new type of electromagnetic memory. It is a “magnetic” type, or B mode, radiation memory effect. Rather than a residual velocity, we find a position displacement of a charged particle induced by the B mode radiation with memory. We find two types of electromagnetic displa... [Phys. Rev. D 95, 125011] Published Fri Jun 30, 2017

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Lorentz violation in Bhabha scattering at finite temperature (2017)

A. F. Santos and Faqir C. Khanna

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-07-01

Beschreibung: Author(s): A. F. Santos and Faqir C. Khanna Corrections to the Bhabha scattering cross section, due to Lorentz violation, at finite temperature are calculated. The vertex interaction between fermions and photons is modified by introducing the Lorentz violation, for the Standard Model extension, from C P T odd nonminimal coupling. The finite tem... [Phys. Rev. D 95, 125012] Published Fri Jun 30, 2017

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Non-Abelian Higgs models: Paving the way for asymptotic freedom (2017)

Holger Gies and Luca Zambelli

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-07-12

Beschreibung: Author(s): Holger Gies and Luca Zambelli Asymptotically free renormalization group trajectories can be constructed in non-Abelian Higgs models with the aid of generalized boundary conditions imposed on the renormalized action. We detail this construction within the languages of simple low-order perturbation theory, effective field theory, ... [Phys. Rev. D 96, 025003] Published Tue Jul 11, 2017

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Parity anomaly in four dimensions (2017)

M. Kurkov and D. Vassilevich

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-07-15

Beschreibung: Author(s): M. Kurkov and D. Vassilevich In an analogy to the odd-dimensional case we define the parity anomaly as the part of the one-loop effective action for fermions associated with spectral asymmetry of the Dirac operator. This quantity is computed directly on four-dimensional manifolds with a boundary and related to the Chern-Simons ... [Phys. Rev. D 96, 025011] Published Fri Jul 14, 2017

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Twinlike models for kinks, vortices, and monopoles (2017)

D. Bazeia, M. A. Marques, and R. Menezes

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-07-15

Beschreibung: Author(s): D. Bazeia, M. A. Marques, and R. Menezes This work deals with twinlike models that support topological structures such as kinks, vortices, and monopoles. We investigate the equations of motion and develop the first order framework to show how to build distinct models with the same solution and energy density, as required to make them twinl... [Phys. Rev. D 96, 025010] Published Fri Jul 14, 2017

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Greybody factors for a minimally coupled massless scalar field in Einstein-Born-Infeld dilaton spacetime (2017)

Grigoris Panotopoulos and Ángel Rincón

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-07-15

Beschreibung: Author(s): Grigoris Panotopoulos and Ángel Rincón We analyze in detail the propagation of a minimally coupled massless scalar field in the gravitational background of a four-dimensional Einstein-Born-Infeld dilaton charged black hole. We obtain analytical expressions for the absorption cross section as well as the decay rate for the scalar field in... [Phys. Rev. D 96, 025009] Published Fri Jul 14, 2017

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Gravitational domain walls and the dynamics of the gravitational constant G (2017)

Claudio Bunster and Andrés Gomberoff

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-07-21

Beschreibung: Author(s): Claudio Bunster and Andrés Gomberoff From the point of view of elementary particle physics, the gravitational constant G is extraordinarily small. This has led to asking whether it could have decayed to its present value from an initial one commensurate with microscopical units. A mechanism that leads to such a decay is proposed herein... [Phys. Rev. D 96, 025013] Published Thu Jul 20, 2017

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Entropy evolution of moving mirrors and the information loss problem (2017)

Pisin Chen and Dong-han Yeom

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-07-22

Beschreibung: Author(s): Pisin Chen and Dong-han Yeom We investigate the entanglement entropy and the information flow of two-dimensional moving mirrors. Here we point out that various mirror trajectories can help to mimic different candidate resolutions to the information loss paradox following the semiclassical quantum field theory: (i) a suddenly st... [Phys. Rev. D 96, 025016] Published Fri Jul 21, 2017

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Vacuum structure and PT-symmetry breaking of the non-Hermetian (iϕ^{3}) theory (2017)

Abouzeid M. Shalaby

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-07-22

Beschreibung: Author(s): Abouzeid M. Shalaby In this work, we study the P T -symmetric ( i ϕ 3 ) theory using the effective action formalism. To test the accuracy of the used technique, we apply it first to the P T -symmetric ( − ϕ 4 ) theory, where we reproduce the same results obtained in the literature using the method of Dyson-Schwinger equations. In ... [Phys. Rev. D 96, 025015] Published Fri Jul 21, 2017

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Noether’s theorems and conserved currents in gauge theories in the presence of fixed fields (2017)

Gábor Zsolt Tóth

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-07-25

Beschreibung: Author(s): Gábor Zsolt Tóth We extend the standard construction of conserved currents for matter fields in general relativity to general gauge theories. In the original construction, the conserved current associated with a spacetime symmetry generated by a Killing field h μ is given by − g T μ ν h ν , where T μ ν is the energy-momentum ... [Phys. Rev. D 96, 025018] Published Mon Jul 24, 2017

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All coherent field states entangle equally (2017)

Petar Simidzija and Eduardo Martín-Martínez

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-07-25

Beschreibung: Author(s): Petar Simidzija and Eduardo Martín-Martínez We analyze the interactions of particle detectors with coherent states of a free scalar field. We find that the eigenvalues of the postinteraction density matrices of i) a single detector, ii) two detectors, and iii) the partial transpose of the latter, are all independent of which coherent state th... [Phys. Rev. D 96, 025020] Published Mon Jul 24, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Engineering negative stress-energy densities with quantum energy teleportation (2017)

Nicholas Funai and Eduardo Martín-Martínez

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-07-25

Beschreibung: Author(s): Nicholas Funai and Eduardo Martín-Martínez We use quantum energy teleportation in the light-matter interaction as an operational means to create quantum field states that violate energy conditions and have negative local stress-energy densities. We show that the protocol is optimal in the sense that it scales in a way that saturates the quan... [Phys. Rev. D 96, 025014] Published Mon Jul 24, 2017

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Correspondence between entanglement growth and probability distribution of quasiparticles (2017)

Masahiro Nozaki and Naoki Watamura

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-07-25

Beschreibung: Author(s): Masahiro Nozaki and Naoki Watamura We study the excess of (Renyi) entanglement entropy in various free field theories for the locally excited states defined by acting with local operators on the ground state. It is defined by subtracting the entropy for the ground state from the one for the excited state. Here the spacetime dimension... [Phys. Rev. D 96, 025019] Published Mon Jul 24, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Topologically nontrivial configurations in the 4d Einstein-nonlinear σ-model system (2017)

Fabrizio Canfora, Nikolaos Dimakis, and Andronikos Paliathanasis

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-07-26

Beschreibung: Author(s): Fabrizio Canfora, Nikolaos Dimakis, and Andronikos Paliathanasis We construct exact, regular and topologically nontrivial configurations of the coupled Einstein-nonlinear sigma model in ( 3 + 1 ) dimensions. The ansatz for the nonlinear S U ( 2 ) field is regular everywhere and circumvents Derrick’s theorem because it depends explicitly on time, but in such a way that it... [Phys. Rev. D 96, 025021] Published Tue Jul 25, 2017

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Higher dimensional higher derivative ϕ^{4} theory (2017)

J. A. Gracey and R. M. Simms

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-07-27

Beschreibung: Author(s): J. A. Gracey and R. M. Simms We construct several towers of scalar quantum field theories with an O ( N ) symmetry which have higher derivative kinetic terms. The Lagrangians in each tower are connected by lying in the same universality class at the d -dimensional Wilson-Fisher fixed point. Moreover the universal theory is studied ... [Phys. Rev. D 96, 025022] Published Wed Jul 26, 2017

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Nonthermal signature of the Unruh effect in field mixing (2017)

M. Blasone, G. Lambiase, and G. G. Luciano

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-07-27

Beschreibung: Author(s): M. Blasone, G. Lambiase, and G. G. Luciano Mixing transformations for a uniformly accelerated observer (Rindler observer) are analyzed within the quantum field theory framework as a basis for investigating gravitational effects on flavor oscillations. In particular, the case of two charged boson fields with different masses is discussed. In ... [Phys. Rev. D 96, 025023] Published Wed Jul 26, 2017

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Uniqueness of the Fock quantization of Dirac fields in 2+1 dimensions (2017)

Jerónimo Cortez, Beatriz Elizaga Navascués, Mercedes Martín-Benito, Guillermo A. Mena Marugán, and José M. Velhinho

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-07-29

Beschreibung: Author(s): Jerónimo Cortez, Beatriz Elizaga Navascués, Mercedes Martín-Benito, Guillermo A. Mena Marugán, and José M. Velhinho We study the Fock quantization of a free Dirac field in 2 + 1 -dimensional backgrounds which are conformally ultrastatic, with a time-dependent conformal factor. As it is typical for field theories, there is an infinite ambiguity in the Fock representation of the canonical anticommutation relations. Di... [Phys. Rev. D 96, 025024] Published Fri Jul 28, 2017

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Dynamical Casimir effect for semitransparent mirrors (2017)

C. D. Fosco, A. Giraldo, and F. D. Mazzitelli

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-08-04

Beschreibung: Author(s): C. D. Fosco, A. Giraldo, and F. D. Mazzitelli We study the dynamical Casimir effect resulting from the oscillatory motion of either one or two flat semitransparent mirrors, coupled to a quantum real and massless scalar field. Our approach is based on a perturbative evaluation, in the coupling between mirrors and field, of the corresponding effe... [Phys. Rev. D 96, 045004] Published Wed Aug 02, 2017

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Double soft limit of the graviton amplitude from the Cachazo-He-Yuan formalism (2017)

Arnab Priya Saha

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-08-04

Beschreibung: Author(s): Arnab Priya Saha We present a complete analysis for double soft limit of graviton scattering amplitude using the formalism proposed by Cachazo, He, and Yuan. Our results agree with that obtained via Britto–Cachazo–Feng–Witten (BCFW) recursion relations in [T. Klose, T. McLoughlin, D. Nandan, J. Plefka, and G. Travag... [Phys. Rev. D 96, 045002] Published Wed Aug 02, 2017

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Intersecting surface defects and two-dimensional CFT (2017)

Jaume Gomis, Bruno Le Floch, Yiwen Pan, and Wolfger Peelaers

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-08-04

Beschreibung: Author(s): Jaume Gomis, Bruno Le Floch, Yiwen Pan, and Wolfger Peelaers We initiate the study of intersecting surface operators/defects in 4D quantum field theories (QFTs). We characterize these defects by coupled 4D/2D/0D theories constructed by coupling the degrees of freedom localized at a point and on intersecting surfaces in spacetime to each other and to the 4D QF... [Phys. Rev. D 96, 045003] Published Wed Aug 02, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Entanglement-induced quantum radiation (2017)

Satoshi Iso, Rumi Tatsukawa, Kazushige Ueda, and Kazuhiro Yamamoto

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-08-04

Beschreibung: Author(s): Satoshi Iso, Rumi Tatsukawa, Kazushige Ueda, and Kazuhiro Yamamoto Quantum entanglement of the Minkowski vacuum state between left and right Rindler wedges generates thermal behavior in the right Rindler wedge, which is known as the Unruh effect. In this paper, we show that there is another consequence of this entanglement, namely entanglement-induced quantum radia... [Phys. Rev. D 96, 045001] Published Tue Aug 01, 2017

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Flat space amplitudes and conformal symmetry of the celestial sphere (2017)

Sabrina Pasterski, Shu-Heng Shao, and Andrew Strominger

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-09-29

Beschreibung: Author(s): Sabrina Pasterski, Shu-Heng Shao, and Andrew Strominger The four-dimensional (4D) Lorentz group S L ( 2 , C ) acts as the two-dimensional (2D) global conformal group on the celestial sphere at infinity where asymptotic 4D scattering states are specified. Consequent similarities of 4D flat space amplitudes and 2D correlators on the conformal sphere are obscured... [Phys. Rev. D 96, 065026] Published Thu Sep 28, 2017

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Over the horizon: Distinguishing the Schwarzschild spacetime and the $\mathbb{R}{\mathbb{P}}^{3}$ spacetime using an Unruh-DeWitt detector (2017)

Keith K. Ng, Robert B. Mann, and Eduardo Martín-Martínez

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-10-11

Beschreibung: Author(s): Keith K. Ng, Robert B. Mann, and Eduardo Martín-Martínez The RP 3 geon and the Schwarzschild black hole are two black hole spacetimes which differ only behind the event horizon. We show that the thermal Hawking radiation emanating from the two black holes contains nontrivial correlations, that these correlations contain information about their interiors, a... [Phys. Rev. D 96, 085004] Published Tue Oct 10, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Canonical field anticommutators in the extended gauged Rarita-Schwinger theory (2017)

Stephen L. Adler, Marc Henneaux, and Pablo Pais

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-10-17

Beschreibung: Author(s): Stephen L. Adler, Marc Henneaux, and Pablo Pais We reexamine canonical quantization of the gauged Rarita-Schwinger theory using the extended theory, incorporating a dimension 1 2 auxiliary spin- 1 2 field Λ , in which there is an exact off-shell gauge invariance. In Λ = 0 gauge, which reduces to the original unextended theory, our results agree with th... [Phys. Rev. D 96, 085005] Published Mon Oct 16, 2017

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Note on asymptotic symmetries and soft gluon theorems (2017)

Pujian Mao and Jun-Bao Wu

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-09-27

Beschreibung: Author(s): Pujian Mao and Jun-Bao Wu Recently, the leading soft gluon theorem with single soft emission was shown to be the Ward identity of a two-dimensional G -Kac-Moody symmetry. In this paper, we show that the leading soft gluon theorem can be interpreted as the Ward identity for the asymptotic symmetries of non-Abelian gauge theory... [Phys. Rev. D 96, 065023] Published Tue Sep 26, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Fermionic currents in AdS spacetime with compact dimensions (2017)

S. Bellucci, A. A. Saharian, and V. Vardanyan

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-09-28

Beschreibung: Author(s): S. Bellucci, A. A. Saharian, and V. Vardanyan We derive a closed expression for the vacuum expectation value (VEV) of the fermionic current density in a ( D + 1 )-dimensional locally AdS spacetime with an arbitrary number of toroidally compactified Poincaré spatial dimensions and in the presence of a constant gauge field. The latter can be formally... [Phys. Rev. D 96, 065025] Published Wed Sep 27, 2017

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Symmetries and conservation laws in non-Hermitian field theories (2017)

Jean Alexandre, Peter Millington, and Dries Seynaeve

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-10-03

Beschreibung: Author(s): Jean Alexandre, Peter Millington, and Dries Seynaeve Anti-Hermitian mass terms are considered, in addition to Hermitian ones, for P T -symmetric complex-scalar and fermionic field theories. In both cases, the Lagrangian can be written in a manifestly symmetric form in terms of the P T -conjugate variables, allowing for an unambiguous definition of the equ... [Phys. Rev. D 96, 065027] Published Fri Sep 29, 2017

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Covariant and single-field effective action with the background-field formalism (2017)

Mahmoud Safari and Gian Paolo Vacca

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-10-03

Beschreibung: Author(s): Mahmoud Safari and Gian Paolo Vacca In the context of scalar quantum field theory, we introduce a class of generically nonlinear quantum-background splits for which the splitting Ward identity, encoding the single-field dependence in the effective action, can be solved exactly. We show that this can be used to construct an effective a... [Phys. Rev. D 96, 085001] Published Mon Oct 02, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Black hole squeezers (2017)

Daiqin Su, C. T. Marco Ho, Robert B. Mann, and Timothy C. Ralph

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-09-26

Beschreibung: Author(s): Daiqin Su, C. T. Marco Ho, Robert B. Mann, and Timothy C. Ralph We show that the gravitational quasinormal modes (QNMs) of a Schwarzschild black hole play the role of a multimode squeezer that can generate particles. For a minimally coupled scalar field, the QNMs “squeeze” the initial state of the scalar field (even for the vacuum) and produce scalar particles. ... [Phys. Rev. D 96, 065017] Published Mon Sep 25, 2017

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Relativistic (2,3)-threshold quantum secret sharing (2017)

Mehdi Ahmadi, Ya-Dong Wu, and Barry C. Sanders

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-09-26

Beschreibung: Author(s): Mehdi Ahmadi, Ya-Dong Wu, and Barry C. Sanders In quantum secret sharing protocols, the usual presumption is that the distribution of quantum shares and players’ collaboration are both performed inertially. Here we develop a quantum secret sharing protocol that relaxes these assumptions wherein we consider the effects due to the accelerating mot... [Phys. Rev. D 96, 065018] Published Mon Sep 25, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Dynamical Lorentz symmetry breaking in a 4D massless four-fermion model (2017)

J. F. Assunção, T. Mariz, J. R. Nascimento, and A. Yu. Petrov

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-09-26

Beschreibung: Author(s): J. F. Assunção, T. Mariz, J. R. Nascimento, and A. Yu. Petrov We study spontaneous Lorentz symmetry breaking for a four-dimensional massless four-fermion model. Our methodology is based on use of the rationalized propagator. We show that a bumblebee potential arises as a result of one-loop calculations and displays nontrivial minima. Also, we demonstrate that ... [Phys. Rev. D 96, 065021] Published Mon Sep 25, 2017

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Correlation functions on a curved background (2017)

Benjamin Knorr and Stefan Lippoldt

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-09-26

Beschreibung: Author(s): Benjamin Knorr and Stefan Lippoldt We investigate gravitational correlation functions in a curved background with the help of nonperturbative renormalization group methods. Beta functions for eleven couplings are derived, two of which correspond to running gauge parameters. A unique ultraviolet fixed point is found, suitable for a U... [Phys. Rev. D 96, 065020] Published Mon Sep 25, 2017

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Conformal basis for flat space amplitudes (2017)

Sabrina Pasterski and Shu-Heng Shao

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-09-26

Beschreibung: Author(s): Sabrina Pasterski and Shu-Heng Shao We study solutions of the Klein-Gordon, Maxwell, and linearized Einstein equations in R 1 , d + 1 that transform as d -dimensional conformal primaries under the Lorentz group S O ( 1 , d + 1 ) . Such solutions, called conformal primary wavefunctions, are labeled by a conformal dimension Δ and a point in R d , rather... [Phys. Rev. D 96, 065022] Published Mon Sep 25, 2017

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Actions for particles and strings and Chern-Simons gravity (2017)

Lei Jiusi and V. P. Nair

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-09-26

Beschreibung: Author(s): Lei Jiusi and V. P. Nair We consider actions for particles and strings, including twistorial descriptions on 4D Minkowski and AdS 5 spacetimes from the point of view of coadjoint orbits for the isometry group. We also consider the collective coordinate dynamics of singular solutions in Chern-Simons (CS) theories and CS theor... [Phys. Rev. D 96, 065019] Published Mon Sep 25, 2017

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NLO renormalization in the Hamiltonian truncation (2017)

Joan Elias-Miró, Slava Rychkov, and Lorenzo G. Vitale

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-09-28

Beschreibung: Author(s): Joan Elias-Miró, Slava Rychkov, and Lorenzo G. Vitale Hamiltonian truncation (also known as “truncated spectrum approach”) is a numerical technique for solving strongly coupled quantum field theories, in which the full Hilbert space is truncated to a finite-dimensional low-energy subspace. The accuracy of the method is limited only by the available com... [Phys. Rev. D 96, 065024] Published Wed Sep 27, 2017

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Infrared divergences in QED revisited (2017)

Daniel Kapec, Malcolm Perry, Ana-Maria Raclariu, and Andrew Strominger

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-10-11

Beschreibung: Author(s): Daniel Kapec, Malcolm Perry, Ana-Maria Raclariu, and Andrew Strominger It has been found recently that the vacuum state of quantum electrodynamics (QED) is infinitely degenerate. The authors exploit this fact and show that any non-trivial scattering process in QED is necessarily accompanied by a transition among the degenerate vacua, making the scattering amplitude finite at low energy scales (infrared finite). [Phys. Rev. D 96, 085002] Published Tue Oct 10, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Gravitational anomalies on the Newton-Cartan background (2017)

Karan Fernandes and Arpita Mitra

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-10-11

Beschreibung: Author(s): Karan Fernandes and Arpita Mitra We derive the trace and diffeomorphism anomalies of the Schrödinger field minimally coupled to the Newton-Cartan background using Fujikawa’s path integral approach. This approach, in particular, enables us to calculate the one-loop contributions due to all the fields of the Newton-Cartan structure. ... [Phys. Rev. D 96, 085003] Published Tue Oct 10, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Casimir energy of Sierpinski triangles (2017)

K. V. Shajesh, Prachi Parashar, Inés Cavero-Peláez, Jerzy Kocik, and Iver Brevik

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-11-14

Beschreibung: Author(s): K. V. Shajesh, Prachi Parashar, Inés Cavero-Peláez, Jerzy Kocik, and Iver Brevik Using scaling arguments and the property of self-similarity we derive the Casimir energies of Sierpinski triangles and Sierpinski rectangles. The Hausdorff-Besicovitch dimension (fractal dimension) of the Casimir energy is introduced and the Berry-Weyl conjecture is discussed for these geometries. W... [Phys. Rev. D 96, 105010] Published Mon Nov 13, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Scheme-independent calculations of physical quantities in an $\mathcal{N}=1$ supersymmetric gauge theory (2017)

Thomas A. Ryttov and Robert Shrock

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-11-28

Beschreibung: Author(s): Thomas A. Ryttov and Robert Shrock We consider an asymptotically free, vectorial, N = 1 supersymmetric gauge theory with gauge group G and N f pairs of chiral superfields in the respective representations R and R ¯ of G , having an infrared fixed point (IRFP) of the renormalization group at α IR . We present exact results for the anomalous ... [Phys. Rev. D 96, 105018] Published Mon Nov 27, 2017

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Scattering cross section and stability of global monopoles (2017)

J. P. M. Pitelli, V. S. Barroso, and Maurício Richartz

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-11-28

Beschreibung: Author(s): J. P. M. Pitelli, V. S. Barroso, and Maurício Richartz We study the scattering of scalar waves propagating on the global monopole background. Since the scalar wave operator in this topological defect is not essentially self-adjoint, its solutions are not uniquely determined until a boundary condition at the origin is specified. As we show, this boundary... [Phys. Rev. D 96, 105021] Published Mon Nov 27, 2017

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UV completion of five-dimensional scalar QED and Lorentz symmetry (2017)

F. Marques, M. Gomes, and A. J. da Silva

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-11-30

Beschreibung: Author(s): F. Marques, M. Gomes, and A. J. da Silva We study a five-dimensional Horava-Lifshitz–like scalar QED with dynamical exponent z = 2 . Consistency of the renormalization procedure requires the presence of four quartic and one sixfold scalar couplings besides the terms bilinear in the scalar fields. We compute one-loop radiative corrections to t... [Phys. Rev. D 96, 105023] Published Wed Nov 29, 2017

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Analytical study of a Kerr-Sen black hole and a charged massive scalar field (2017)

Canisius Bernard

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-11-30

Beschreibung: Author(s): Canisius Bernard It is reported that Kerr-Newman and Kerr-Sen black holes are unstable to perturbations of charged massive scalar field. In this paper, we study analytically the complex frequencies which characterize charged massive scalar fields in a near-extremal Kerr-Sen black hole. For near-extremal Kerr-Sen bla... [Phys. Rev. D 96, 105025] Published Wed Nov 29, 2017

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Direct test of the integral Yang-Mills equations through $SU(2)$ monopoles (2017)

C. P. Constantinidis, L. A. Ferreira, and G. Luchini

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-11-30

Beschreibung: Author(s): C. P. Constantinidis, L. A. Ferreira, and G. Luchini We use the S U ( 2 ) ’t Hooft-Polyakov monopole configuration, and its Bogomolny-Prasad-Sommerfield (BPS) version, to test the integral equations of the Yang-Mills theory. Those integral equations involve two (complex) parameters which do not appear in the differential Yang-Mills equations, and if they ... [Phys. Rev. D 96, 105024] Published Wed Nov 29, 2017

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Effective potential in massless theories (2017)

D. G. C. McKeon

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-12-06

Beschreibung: Author(s): D. G. C. McKeon The effective potential V is a massless self-coupled scalar theory, and massless scalar electrodynamics is considered. Both the MS ¯ and Coleman-Weinberg renormalization schemes are examined. The renormalization scheme dependence of V is determined. Upon summing all of the logarithmic contributions t... [Phys. Rev. D 96, 125002] Published Tue Dec 05, 2017

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Double-winding Wilson loops in the $SU\mathbf{(}N\mathbf{)}$ Yang-Mills theory (2017)

Ryutaro Matsudo and Kei-Ichi Kondo

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-11-14

Beschreibung: Author(s): Ryutaro Matsudo and Kei-Ichi Kondo We consider double-winding, triple-winding, and multiple-winding Wilson loops in the S U ( N ) Yang-Mills gauge theory. We examine how the area-law falloff of the vacuum expectation value of a multiple-winding Wilson loop depends on the number of color N . In sharp contrast to the difference-of-areas law... [Phys. Rev. D 96, 105011] Published Mon Nov 13, 2017

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Cosmology in the laboratory: An analogy between hyperbolic metamaterials and the Milne universe (2017)

David Figueiredo, Fernando Moraes, Sébastien Fumeron, and Bertrand Berche

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-11-17

Beschreibung: Author(s): David Figueiredo, Fernando Moraes, Sébastien Fumeron, and Bertrand Berche This article shows that the compactified Milne universe geometry, a toy model for the big crunch/big bang transition, can be realized in hyperbolic metamaterials, a new class of nanoengineered systems which have recently found its way as an experimental playground for cosmological ideas. On one side... [Phys. Rev. D 96, 105012] Published Thu Nov 16, 2017

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Large gauge transformations and little group for soft photons (2017)

Yuta Hamada, Min-Seok Seo, and Gary Shiu

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-11-21

Beschreibung: Author(s): Yuta Hamada, Min-Seok Seo, and Gary Shiu Recently, large gauge transformation (LGT), the residual gauge symmetry after gauge fixing that survives at null infinity, has drawn much attention concerning soft theorems and the memory effect. We point out that LGT charges in quantum electrodynamics are in fact one of noncompact generators of the... [Phys. Rev. D 96, 105013] Published Mon Nov 20, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Infrared fixed point physics in $\mathrm{SO}({N}_{c})$ and $\mathrm{Sp}({N}_{c})$ gauge theories (2017)

Thomas A. Ryttov and Robert Shrock

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-11-23

Beschreibung: Author(s): Thomas A. Ryttov and Robert Shrock We study properties of asymptotically free vectorial gauge theories with gauge groups G = SO ( N c ) and G = Sp ( N c ) and N f fermions in a representation R of G , at an infrared (IR) zero of the beta function, α IR , in the non-Abelian Coulomb phase. The fundamental, adjoint, and rank-2 symmetric and antisymmetr... [Phys. Rev. D 96, 105015] Published Wed Nov 22, 2017

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World sheets of spinning particles (2017)

D. S. Kaparulin and S. L. Lyakhovich

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-11-23

Beschreibung: Author(s): D. S. Kaparulin and S. L. Lyakhovich The classical spinning particles are considered such that quantization of classical model leads to an irreducible massive representation of the Poincaré group. The class of gauge equivalent classical particle world lines is shown to form a [ ( d + 1 ) / 2 ] -dimensional world sheet in d -dimensional Minkowski... [Phys. Rev. D 96, 105014] Published Wed Nov 22, 2017

Schlagwort(e): Formal aspects of field theory, field theory in curved space

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Supersymmetry breaking in spatially modulated vacua (2017)

Muneto Nitta, Shin Sasaki, and Ryo Yokokura

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-11-29

Beschreibung: Author(s): Muneto Nitta, Shin Sasaki, and Ryo Yokokura We study spontaneous supersymmetry breaking in spatially modulated stable or metastable vacua in supersymmetric field theories. Such spatial modulation can be realized in a higher derivative chiral model for which vacuum energies are positive, negative, or zero, depending on the model parameters. Th... [Phys. Rev. D 96, 105022] Published Tue Nov 28, 2017

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Anisotropic Unruh temperatures (2017)

Raúl E. Arias, Horacio Casini, Marina Huerta, and Diego Pontello

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-11-29

Beschreibung: Author(s): Raúl E. Arias, Horacio Casini, Marina Huerta, and Diego Pontello The relative entropy between very high-energy localized excitations and the vacuum, where both states are reduced to a spatial region, gives place to a precise definition of a local temperature produced by vacuum entanglement across the boundary. This generalizes the Unruh temperature of the Rindler... [Phys. Rev. D 96, 105019] Published Tue Nov 28, 2017

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Decay of a massive particle in a stiff-matter–dominated universe (2017)

Juho Lankinen and Iiro Vilja

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-11-30

Beschreibung: Author(s): Juho Lankinen and Iiro Vilja In the presence of a gravitational field, decay rates may significantly differ from the flat space equivalent. By studying mutually interacting quantum fields, the decay rates can be calculated on a given spacetime. This paper presents the calculation of the transition probability for the decay of a... [Phys. Rev. D 96, 105026] Published Wed Nov 29, 2017

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Ground state for a massive scalar field in the BTZ spacetime with Robin boundary conditions (2017)

Francesco Bussola, Claudio Dappiaggi, Hugo R. C. Ferreira, and Igor Khavkine

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-11-23

Beschreibung: Author(s): Francesco Bussola, Claudio Dappiaggi, Hugo R. C. Ferreira, and Igor Khavkine We consider a real, massive scalar field in Bañados-Teitelboim-Zanelli spacetime, a 2 + 1 -dimensional black hole solution of Einstein’s field equations with a negative cosmological constant. First, we analyze the space of classical solutions in a mode decomposition, and we characterize the collection ... [Phys. Rev. D 96, 105016] Published Wed Nov 22, 2017

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Vacua and walls of mass-deformed Kähler nonlinear sigma models on $SO(2N)/U(N)$ (2017)

Bum-Hoon Lee, Chanyong Park, and Sunyoung Shin

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-11-28

Beschreibung: Author(s): Bum-Hoon Lee, Chanyong Park, and Sunyoung Shin We construct walls of mass-deformed Kähler nonlinear sigma models on S O ( 2 N ) / U ( N ) , by using the moduli matrix formalism and the simple roots of S O ( 2 N ) . Penetrable walls are observed in the nonlinear sigma models on S O ( 2 N ) / U ( N ) with N 〉 3 . [Phys. Rev. D 96, 105017] Published Mon Nov 27, 2017

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Mode-sum prescription for vacuum polarization in black hole spacetimes in even dimensions (2017)

Peter Taylor and Cormac Breen

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-11-28

Beschreibung: Author(s): Peter Taylor and Cormac Breen We present a mode-sum regularization prescription for computing the vacuum polarization of a scalar field in static spherically symmetric black hole spacetimes in even dimensions. This is the first general and systematic approach to regularized vacuum polarization in higher even dimensions, building... [Phys. Rev. D 96, 105020] Published Mon Nov 27, 2017

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Heat kernel and Weyl anomaly of Schrödinger invariant theory (2017)

Sridip Pal and Benjamín Grinstein

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-12-05

Beschreibung: Author(s): Sridip Pal and Benjamín Grinstein We propose a method inspired by discrete light cone quantization to determine the heat kernel for a Schrödinger field theory (Galilean boost invariant with z = 2 anisotropic scaling symmetry) living in d + 1 dimensions, coupled to a curved Newton-Cartan background, starting from a heat kernel of a relat... [Phys. Rev. D 96, 125001] Published Mon Dec 04, 2017

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Localization of observables in the Rindler wedge (2017)

M. Asorey, A. P. Balachandran, G. Marmo, and A. R. de Queiroz

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-11-07

Beschreibung: Author(s): M. Asorey, A. P. Balachandran, G. Marmo, and A. R. de Queiroz One of the striking features of QED is that charged particles create a coherent cloud of photons. The resultant coherent state vectors of photons generate a nontrivial representation of the localized algebra of observables that do not support a representation of the Lorentz group: Lorentz symmetry i... [Phys. Rev. D 96, 105001] Published Mon Nov 06, 2017

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Gluon amplitudes as $2d$ conformal correlators (2017)

Sabrina Pasterski, Shu-Heng Shao, and Andrew Strominger

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-10-28

Beschreibung: Author(s): Sabrina Pasterski, Shu-Heng Shao, and Andrew Strominger Recently, spin-one wave functions in four dimensions that are conformal primaries of the Lorentz group S L ( 2 , C ) were constructed. We compute low-point, tree-level gluon scattering amplitudes in the space of these conformal primary wave functions. The answers have the same conformal covariance as corr... [Phys. Rev. D 96, 085006] Published Fri Oct 27, 2017

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Casimir self-entropy of a spherical electromagnetic $δ$-function shell (2017)

Kimball A. Milton, Pushpa Kalauni, Prachi Parashar, and Yang Li

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2017-10-28

Beschreibung: Author(s): Kimball A. Milton, Pushpa Kalauni, Prachi Parashar, and Yang Li In this paper we continue our program of computing Casimir self-entropies of idealized electrical bodies. Here we consider an electromagnetic δ -function sphere (“semitransparent sphere”) whose electric susceptibility has a transverse polarization with arbitrary strength. Dispersion is incorporated b... [Phys. Rev. D 96, 085007] Published Fri Oct 27, 2017

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