Expansion of 1D polarized superfluids: The FFLO state reveals itself

Details Expansion of 1D polarized superfluids: The FFLO state reveals itself Expansion of 1D polarized superfluids: The FFLO state reveals itself

2012-02-17

arxiv.org/abs/1202.3935v1

Physics

Condensed Matter

Quantum Gases

4 pages, 5 figures + 2 pages of supplementary material

Scientific paper

We study the expansion dynamics of a one dimensional polarized Fermi gas after sudden release from confinement using both the mean-field Bogoliubov-de Gennes and the numerically exact Time-Evolving Block Decimation methods. Our results show that experimentally observable spin density modulations directly related to the presence of a Fulde-Ferrel-Larkin-Ovchinnikov (FFLO) state develop during the expansion of the cloud, providing incontrovertible evidence of this long-sought state.

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