Vortex-Antivortex Lattice in Ultracold Fermionic Gases

Journal Article · Fri Feb 03 00:00:00 EST 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.96.040404· OSTI ID:20777001

Botelho, S S

We discuss ultracold Fermi gases in two dimensions, which could be realized in a strongly confining one-dimensional optical lattice. We obtain the temperature versus effective interaction phase diagram for an s-wave superfluid and show that, below a certain critical temperature T{sub c}, spontaneous vortex-antivortex pairs appear for all coupling strengths. In addition, we show that the evolution from weak-to-strong coupling is smooth, and that the system forms a square vortex-antivortex lattice at a lower critical temperature T{sub M}.

• OSTI ID: 20777001
• Journal Information: Physical Review Letters, Vol. 96, Issue 4; Other Information: DOI: 10.1103/PhysRevLett.96.040404; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BCS THEORY
BOSE-EINSTEIN CONDENSATION
COUPLING
CRITICAL TEMPERATURE
EVOLUTION
FERMI GAS
FERMIONS
INTERACTIONS
LATTICE FIELD THEORY
ONE-DIMENSIONAL CALCULATIONS
PHASE DIAGRAMS
S WAVES
STRONG-COUPLING MODEL
SUPERFLUIDITY
VORTICES