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

Journal Article · Fri Sep 15 04:00:00 EDT 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.74.033603· OSTI ID:20857731

Machida, M; Koyama, T ^[1]

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1. CCSE, Japan Atomic Energy Research Institute, 6-9-3 Higashi-Ueno, Taito-ku, Tokyo 110-0015 (Japan) and CREST(JST) 4-1-8 Honcho, Kawaguchi, Saitama 332-0012 (Japan)

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.

• OSTI ID: 20857731
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 3 Vol. 74; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
BCS THEORY
BOSE-EINSTEIN CONDENSATION
BOSONS
DAMPING
FERMI GAS
FERMIONS
GINZBURG-LANDAU THEORY
OSCILLATIONS
RESONANCE
SUPERCONDUCTIVITY
SUPERFLUIDITY
TIME DEPENDENCE
VORTICES