Relativistic BCS-BEC crossover in a boson-fermion model

Details Relativistic BCS-BEC crossover in a boson-fermion model Relativistic BCS-BEC crossover in a boson-fermion model

2006-11-28

arxiv.org/abs/nucl-th/0611097v2

Phys.Rev.D76:034013,2007

Physics

Nuclear Physics

Nuclear Theory

ReVTex4, 19 pages, 10 figures; new chapter added about the case of imbalanced fermion populations; minor modifications to main

Scientific paper

10.1103/PhysRevD.76.034013

We investigate the crossover from Bardeen-Cooper-Schrieffer (BCS) pairing to a Bose-Einstein condensate (BEC) in a relativistic superfluid within a boson-fermion model. The model includes, besides the fermions, separate bosonic degrees of freedom, accounting for the bosonic nature of the Cooper pairs. The crossover is realized by tuning the difference between the boson mass and boson chemical potential as a free parameter. The model yields populations of condensed and uncondensed bosons as well as gapped and ungapped fermions throughout the crossover region for arbitrary temperatures. Moreover, we observe the appearance of antiparticles for sufficiently large values of the crossover parameter. As an application, we study pairing of fermions with imbalanced populations. The model can potentially be applied to color superconductivity in dense quark matter at strong couplings.

Affiliated with

Also associated with

No associations

Rating

Relativistic BCS-BEC crossover in a boson-fermion model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Relativistic BCS-BEC crossover in a boson-fermion model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Relativistic BCS-BEC crossover in a boson-fermion model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-350871