Condensate formation with three-component ultracold fermions
Abstract
We investigate the formation of Bose-Einstein condensation and population imbalance in a three-component Fermi superfluid by increasing the U(3) invariant attractive interaction. We consider the system at zero temperature in three dimensions and also in two dimensions. Within the mean-field theory, we derive explicit formulas for number densities, gap order parameter, condensate density and condensate fraction of the uniform system, and analyze them in the crossover from the Bardeen-Cooper-Schrieffer (BCS) state of Cooper pairs to the Bose-Einstein Condensate (BEC) of strongly-bound molecular dimers. In addition, we study this Fermi mixture trapped by a harmonic potential: we calculate the density profiles of the three components and the condensate density profile of Cooper pairs in the BCS-BEC crossover.
Cite
@article{arxiv.1103.1064,
title = {Condensate formation with three-component ultracold fermions},
author = {Luca Salasnich},
journal= {arXiv preprint arXiv:1103.1064},
year = {2011}
}
Comments
6 pages, 3 figures, accepted for publication in Physical Review A (regular article)