Condensate Fraction of a Two-Dimensional Attractive Fermi Gas
Statistical Mechanics
2009-11-13 v1 Superconductivity
Abstract
We investigate the Bose-Einstein condensation of fermionic pairs in a two-dimensional uniform two-component Fermi superfluid obtaining an explicit formula for the condensate density as a function of the chemical potential and the energy gap. By using the mean-field extended BCS theory, we analyze, as a function of the bound-state energy, the off-diagonal long-range order in the crossover from the Bardeen-Cooper-Schrieffer (BCS) state of weakly-bound Cooper pairs to the Bose-Einstein Condensate (BEC) of strongly-bound molecular dimers.
Keywords
Cite
@article{arxiv.0706.3819,
title = {Condensate Fraction of a Two-Dimensional Attractive Fermi Gas},
author = {Luca Salasnich},
journal= {arXiv preprint arXiv:0706.3819},
year = {2009}
}
Comments
4 pages, 2 figures, accepted for publication in Phys. Rev. A