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Solitary matter waves in combined linear and nonlinear potentials: Detection, stability, and dynamics (2013)

Scott Holmes, Mason A. Porter, Peter Krüger, and Panayotis G. Kevrekidis

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2013-09-25

Description: Author(s): Scott Holmes, Mason A. Porter, Peter Krüger, and Panayotis G. Kevrekidis We study statically homogeneous Bose-Einstein condensates with spatially inhomogeneous interactions and outline an experimental realization of compensating linear and nonlinear potentials that can yield constant-density solutions. We illustrate how the presence of a step in the nonlinearity coeffici... [Phys. Rev. A 88, 033627] Published Tue Sep 24, 2013

Keywords: Matter waves and collective properties of cold atoms and molecules

Print ISSN: 1050-2947

Electronic ISSN: 1094-1622

Topics: Physics

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Observation of highly disparate K-shell x-ray spectra produced by charge exchange with bare mid-Z ions (2014)

Gabriele L. Betancourt-Martinez, Peter Beiersdorfer, Gregory V. Brown, Richard L. Kelley, Caroline A. Kilbourne, Dimitra Koutroumpa, Maurice A. Leutenegger, and F. Scott Porter

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2014-11-27

Description: Author(s): Gabriele L. Betancourt-Martinez, Peter Beiersdorfer, Gregory V. Brown, Richard L. Kelley, Caroline A. Kilbourne, Dimitra Koutroumpa, Maurice A. Leutenegger, and F. Scott Porter We performed charge-exchange experiments with the electron-beam ion trap and an x-ray calorimeter spectrometer at the Lawrence Livermore National Laboratory. We compare the relative strength of the high-n Lyman series emission for different combinations of ions and neutral gases. Theoretical predic... [Phys. Rev. A 90, 052723] Published Wed Nov 26, 2014

Keywords: Atomic and molecular collisions and interactions

Print ISSN: 1050-2947

Electronic ISSN: 1094-1622

Topics: Physics

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Ground state of the two-dimensional attractive Fermi gas: Essential properties from few to many body (2016)

Lukas Rammelmüller, William J. Porter, and Joaquín E. Drut

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2016-03-22

Description: Author(s): Lukas Rammelmüller, William J. Porter, and Joaquín E. Drut We calculate the ground-state properties of unpolarized two-dimensional attractive fermions in the range from few to many particles. Using first-principles lattice Monte Carlo methods, we determine the ground-state energy, Tan's contact, momentum distribution, and single-particle correlation functio… [Phys. Rev. A 93, 033639] Published Mon Mar 21, 2016

Keywords: Matter waves and collective properties of cold atoms and molecules

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Electronic ISSN: 1094-1622

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Thermodynamics of one-dimensional SU(4) and SU(6) fermions with attractive interactions (2017)

M. D. Hoffman, A. C. Loheac, W. J. Porter, and J. E. Drut

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2017-03-02

Description: Author(s): M. D. Hoffman, A. C. Loheac, W. J. Porter, and J. E. Drut Motivated by advances in the manipulation and detection of ultracold atoms with multiple internal degrees of freedom, we present a finite-temperature lattice Monte Carlo calculation of the density and pressure equations of state, as well as Tan's contact, of attractively interacting SU(4)- and SU(6)… [Phys. Rev. A 95, 033602] Published Wed Mar 01, 2017

Keywords: Matter waves and collective properties of cold atoms and molecules

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Electronic ISSN: 1094-1622

Topics: Physics

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Evolution from few- to many-body physics in one-dimensional Fermi systems: One- and two-body density matrices and particle-partition entanglement (2017)

Lukas Rammelmüller, William J. Porter, Jens Braun, and Joaquín E. Drut

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2017-09-28

Description: Author(s): Lukas Rammelmüller, William J. Porter, Jens Braun, and Joaquín E. Drut We study the evolution from few- to many-body physics of fermionic systems in one spatial dimension with attractive pairwise interactions. We determine the detailed form of the momentum distribution, the structure of the one-body density matrix, and the pairing properties encoded in the two-body den... [Phys. Rev. A 96, 033635] Published Wed Sep 27, 2017

Keywords: Matter waves and collective properties of cold atoms and molecules

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Tan's contact and the phase distribution of repulsive Fermi gases: Insights from quantum chromodynamics noise analyses (2017)

William J. Porter and Joaquín E. Drut

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2017-05-20

Description: Author(s): William J. Porter and Joaquín E. Drut Path-integral analyses originally pioneered in the study of the complex-phase problem afflicting lattice calculations of finite-density quantum chromodynamics are generalized to nonrelativistic Fermi gases with repulsive interactions. Using arguments similar to those previously applied to relativist… [Phys. Rev. A 95, 053619] Published Fri May 19, 2017

Keywords: Matter waves and collective properties of cold atoms and molecules

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Dark solitary waves in a class of collisionally inhomogeneous Bose-Einstein condensates (2013)

Chang Wang, Kody J. H. Law, Panayotis G. Kevrekidis, and Mason A. Porter

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2013-02-20

Description: Author(s): Chang Wang, Kody J. H. Law, Panayotis G. Kevrekidis, and Mason A. Porter We study the structure, stability, and dynamics of dark solitary waves in parabolically trapped, collisionally inhomogeneous Bose-Einstein condensates (BECs) with spatially periodic variations of the scattering length. This collisional inhomogeneity yields a nonlinear lattice, which we tune from a s... [Phys. Rev. A 87, 023621] Published Tue Feb 19, 2013

Keywords: Matter waves and collective properties of cold atoms and molecules

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Few-fermion systems in one dimension: Ground- and excited-state energies and contacts (2015)

L. Rammelmüller, W. J. Porter, A. C. Loheac, and J. E. Drut

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2015-07-28

Description: Author(s): L. Rammelmüller, W. J. Porter, A. C. Loheac, and J. E. Drut Using the lattice Monte Carlo method, we compute the energy and Tan's contact in the ground state as well as the first excited state of few- to many-fermion systems in a one-dimensional periodic box. We focus on unpolarized systems of N = 4 , 6 , ... , 12 particles, with a zero-range interaction, and a wide… [Phys. Rev. A 92, 013631] Published Mon Jul 27, 2015

Keywords: Matter waves and collective properties of cold atoms and molecules

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Universality in one-dimensional fermions at finite temperature: Density, pressure, compressibility, and contact (2015)

M. D. Hoffman, P. D. Javernick, A. C. Loheac, W. J. Porter, E. R. Anderson, and J. E. Drut

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2015-03-17

Description: Author(s): M. D. Hoffman, P. D. Javernick, A. C. Loheac, W. J. Porter, E. R. Anderson, and J. E. Drut We present finite-temperature, lattice Monte Carlo calculations of the particle number density, compressibility, pressure, and Tan's contact of an unpolarized system of short-range, attractively interacting spin-1/2 fermions in one spatial dimension, i.e., the Gaudin-Yang model. In addition, we comp... [Phys. Rev. A 91, 033618] Published Mon Mar 16, 2015

Keywords: Matter waves and collective properties of cold atoms and molecules

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