Time-dependent Ginzburg-Landau theory for atomic Fermi gases near the BCS-BEC crossover

M. Machida, Tomio Koyama

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

We construct a time-dependent Ginzburg-Landau (TDGL) theory for the superfluid atomic Fermi-gases near the Feshbach resonance from the fermion-boson model on the basis of the functional integral formalism. We show that the GL coefficients in the TDGL equation are complex numbers except in the BEC limit. The complex TDGL equation describes both damping and propagating dynamics, which leads to very rich superfluid dynamics near the Feshbach resonance. We predict multiple plane-wave modes corresponding to the in-phase and out-of-phase like oscillations between fermionic and bosonic superfluids and a galaxylike spiral pattern for a vortex.

Original languageEnglish
Article number033603
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume74
Issue number3
DOIs
Publication statusPublished - 2006 Sep 15

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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