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Title: Vortex-Antivortex Lattice in Ultracold Fermionic Gases

Abstract

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}.

Authors:
Publication Date:
OSTI Identifier:
20777001
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 96; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevLett.96.040404; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Botelho, S S, and Melo, C.A.R. sa de. Vortex-Antivortex Lattice in Ultracold Fermionic Gases. United States: N. p., 2006. Web. doi:10.1103/PhysRevLett.96.040404.
Botelho, S S, & Melo, C.A.R. sa de. Vortex-Antivortex Lattice in Ultracold Fermionic Gases. United States. https://doi.org/10.1103/PhysRevLett.96.040404
Botelho, S S, and Melo, C.A.R. sa de. 2006. "Vortex-Antivortex Lattice in Ultracold Fermionic Gases". United States. https://doi.org/10.1103/PhysRevLett.96.040404.
@article{osti_20777001,
title = {Vortex-Antivortex Lattice in Ultracold Fermionic Gases},
author = {Botelho, S S and Melo, C.A.R. sa de},
abstractNote = {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}.},
doi = {10.1103/PhysRevLett.96.040404},
url = {https://www.osti.gov/biblio/20777001}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 4,
volume = 96,
place = {United States},
year = {Fri Feb 03 00:00:00 EST 2006},
month = {Fri Feb 03 00:00:00 EST 2006}
}