1995/01/01 by C. J. Bolech, Fabian Heidrich‐Meisner, F. Heidrich-Meisner +8
Physics and Astronomy · Social Sciences · #Business #Cold Atom Physics and Bose-Einstein Condensates #Computer science #Condensed matter physics #Context (archaeology) #Dimension (graph theory) #Electron #Fermi Gamma-ray Space Telescope #Fermi gas #Fermion #Integrable system #Library Science and Administration #Mathematical physics #Momentum (technical analysis) #Physics #Physics of Superconductivity and Magnetism #Quantum #Quantum many-body systems #Quantum mechanics #Spin (aerodynamics) #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.109.110602
published as Phys. Rev. Lett. 109, 110602 (2012) · 8 pages including supplementary material, 9 eps figures, revised version as published, some text moved to the supplemental material
openalex publication_date 1995/01/01 · arxiv created 2012/09/18 · arxiv updated 2012/09/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/06/23
We study the sudden expansion of spin-imbalanced ultracold lattice fermions with attractive interactions in one dimension after turning off the longitudinal confining potential. We show that the momentum distribution functions of majority and minority fermions quickly approach stationary values due to a quantum distillation mechanism that results in a spatial separation of pairs and majority fermions. As a consequence, Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) correlations are lost during the expansion. Furthermore, we argue that the shape of the stationary momentum distribution functions can be understood by relating them to the integrals of motion in this integrable quantum system. We discuss our results in the context of proposals to observe FFLO correlations, related to recent experiments by Liao et al., Nature (London) 467, 567 (2010).