title: Expansion of 1D polarized superfluids: the Fulde-Ferrell-Larkin-Ovchinnikov state reveals itself.
abstract: We study the expansion dynamics of a one-dimensional polarized Fermi gas after its sudden release from confinement using both the mean-field Bogoliubov-de Gennes and the numerically unbiased time-evolving block decimation methods. Our results show that experimentally observable spin density modulations, directly related to the presence of a Fulde-Ferrell-Larkin-Ovchinnikov state, develop during the expansion of the cloud. Our work therefore provides a robust theoretical proposal for the detection of this long-sought state.
authors.affiliation: Department of Physics and Astronomy, Rice University, 6100 Main Street, MS-61, Houston, Texas 77005, USA.
authors.forename: Hong
authors.initials: H
authors.lastname: Lu
authors.forename: L O
authors.initials: LO
authors.lastname: Baksmaty
authors.forename: C J
authors.initials: CJ
authors.lastname: Bolech
authors.forename: Han
authors.initials: H
authors.lastname: Pu