Vortex-Antivortex Lattice in Ultra-Cold Fermi Gases
Other Condensed Matter
2015-06-25 v1
Abstract
We discuss ultra-cold 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_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_M.
Keywords
Cite
@article{arxiv.cond-mat/0509387,
title = {Vortex-Antivortex Lattice in Ultra-Cold Fermi Gases},
author = {S. S. Botelho and C. A. R. Sa de Melo},
journal= {arXiv preprint arXiv:cond-mat/0509387},
year = {2015}
}
Comments
Submitted to Physical Review Letters