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Fast radio bursts from primordial black hole binaries coalescence (2018)

Can-Min Deng, Yifu Cai, Xue-Feng Wu, and En-Wei Liang

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2018-12-21

Description: Author(s): Can-Min Deng, Yifu Cai, Xue-Feng Wu, and En-Wei Liang In this paper we propose a model in which the coalescence of primordial black hole (PBHs) binaries with equal mass M ∼ 10 28 g can emit luminous gigahertz (GHz) radio transient, which may be candidate sources for the observed fast radio bursts (FRBs), if at least one black hole holds an appropriate am... [Phys. Rev. D 98, 123016] Published Thu Dec 20, 2018

Keywords: Astrophysics and astroparticle physics

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Electronic ISSN: 1089-4918

Topics: Physics

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Approximation methods in the study of boson stars (2018)

Joshua Eby, Madelyn Leembruggen, Lauren Street, Peter Suranyi, and L. C. R. Wijewardhana

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2018-12-19

Description: Author(s): Joshua Eby, Madelyn Leembruggen, Lauren Street, Peter Suranyi, and L. C. R. Wijewardhana We analyze the accuracy of the variational method in computing physical quantities relevant for gravitationally bound Bose-Einstein condensates. Using a variety of spherically symmetric variational ansätze found in existing literature, we determine physical quantities and compare them to numerical s... [Phys. Rev. D 98, 123013] Published Tue Dec 18, 2018

Keywords: Astrophysics and astroparticle physics

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Hunting for heavy winos in the Galactic Center (2018)

Lucia Rinchiuso, Nicholas L. Rodd, Ian Moult, Emmanuel Moulin, Matthew Baumgart, Timothy Cohen, Tracy R. Slatyer, Iain W. Stewart, and Varun Vaidya

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2018-12-19

Description: Author(s): Lucia Rinchiuso, Nicholas L. Rodd, Ian Moult, Emmanuel Moulin, Matthew Baumgart, Timothy Cohen, Tracy R. Slatyer, Iain W. Stewart, and Varun Vaidya Observing gamma rays using ground-based atmospheric Cherenkov telescopes provides one of the only probes of heavy weakly interacting dark matter. A canonical target is the thermal wino, for which the strongest limits come from searches for photon lines from annihilations in the Galactic Center. Irre... [Phys. Rev. D 98, 123014] Published Tue Dec 18, 2018

Keywords: Astrophysics and astroparticle physics

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Vibrational modes of Skyrmions (2018)

Sven Bjarke Gudnason and Chris Halcrow

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2018-12-19

Description: Author(s): Sven Bjarke Gudnason and Chris Halcrow We study the vibrational modes of Skyrmions with baryon numbers one through eight in the standard Skyrme model. The vibrational modes are found in the harmonic approximation around the classical soliton solution and the real parts of the frequencies of the modes are extracted. We further classify th... [Phys. Rev. D 98, 125010] Published Tue Dec 18, 2018

Keywords: Formal aspects of field theory, field theory in curved space

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Black hole remnants may exist if Starobinsky inflation occurred (2018)

Paul R. Anderson, Mathew J. Binkley, Jillian M. Bjerke, and P. Wilson Cauley

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2018-12-19

Description: Author(s): Paul R. Anderson, Mathew J. Binkley, Jillian M. Bjerke, and P. Wilson Cauley Zero temperature black hole solutions to the semiclassical backreaction equations are investigated. Evidence is provided that certain components of the stress-energy tensors for free quantum fields at the horizon only depend on the local geometry near the horizon. This allows the semiclassical backr... [Phys. Rev. D 98, 125011] Published Tue Dec 18, 2018

Keywords: Formal aspects of field theory, field theory in curved space

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Local action for fermionic unconstrained higher spin gauge fields in AdS and dS spacetimes (2018)

Mojtaba Najafizadeh

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2018-12-19

Description: Author(s): Mojtaba Najafizadeh Building on Segal’s local free action principle for bosonic unconstrained higher spin gauge fields in d -dimensional ( A ) d S d spacetime, we present a similar action principle à la Segal for fermions in d -dimensional ( A ) d S d spacetime. Moreover, at the level of equations of motion, we demonstrate how the... [Phys. Rev. D 98, 125012] Published Tue Dec 18, 2018

Keywords: Formal aspects of field theory, field theory in curved space

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Resolution of the small scale structure issues with dissipative dark matter from multiple standard model sectors (2018)

R. Foot

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2018-12-19

Description: Author(s): R. Foot Dissipative dark matter arising from a hidden sector consisting of N sec exact copies of the standard model is discussed. The particles from each sector interact with those from the other sectors by gravity and via the kinetic mixing interaction, described by the dimensionless parameter, ε . It has be... [Phys. Rev. D 98, 123015] Published Tue Dec 18, 2018

Keywords: Astrophysics and astroparticle physics

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First HAWC observations of the Sun constrain steady TeV gamma-ray emission (2018)

A. Albert et al. (HAWC Collaboration)

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2018-12-18

Description: Author(s): A. Albert et al. (HAWC Collaboration) Steady gamma-ray emission up to at least 200 GeV has been detected from the solar disk in the Fermi-LAT data, with the brightest, hardest emission occurring during solar minimum. The likely cause is hadronic cosmic rays undergoing collisions in the Sun’s atmosphere after being redirected from ingoin... [Phys. Rev. D 98, 123011] Published Mon Dec 17, 2018

Keywords: Astrophysics and astroparticle physics

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Constraints on spin-dependent dark matter scattering with long-lived mediators from TeV observations of the Sun with HAWC (2018)

A. Albert et al. (HAWC Collaboration)

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2018-12-18

Description: Author(s): A. Albert et al. (HAWC Collaboration) We analyze the Sun as a source for the indirect detection of dark matter through a search for gamma rays from the solar disk. Capture of dark matter by elastic interactions with the solar nuclei followed by annihilation to long-lived mediators can produce a detectable gamma-ray flux. We search 3 yea... [Phys. Rev. D 98, 123012] Published Mon Dec 17, 2018

Keywords: Astrophysics and astroparticle physics

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Entropy and modular Hamiltonian for a free chiral scalar in two intervals (2018)

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

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2018-12-18

Description: Author(s): Raúl E. Arias, Horacio Casini, Marina Huerta, and Diego Pontello We calculate the analytic form of the vacuum modular Hamiltonian for a two interval region and the algebra of a current j ( x ) = ∂ ϕ ( x ) corresponding to a chiral free scalar ϕ in d = 2 . We also compute explicitly the mutual information between the intervals. This model shows a failure of Haag duality for t... [Phys. Rev. D 98, 125008] Published Mon Dec 17, 2018

Keywords: Formal aspects of field theory, field theory in curved space

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