Relativistic BCS-BEC crossover in a boson-fermion model
Relativistic BCS-BEC crossover in a boson-fermion model
复制标题
玻色子-费米子模型中的相对论 BCS-BEC 交叉
DOI:
10.1103/physrevd.76.034013
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发表时间:
2006-11
影响因子:
5
通讯作者:
Wang, Qun
中科院分区:
文献类型:
--
作者:
Schmitt, Andreas;Deng, Jian;Wang, Qun
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.
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影响因子:
--
作者:
M. Alford
通讯作者:
M. Alford
DOI:
10.1103/physrevb.42.4122
发表时间:
1990-09
期刊:
Physical review. B, Condensed matter
影响因子:
--
作者:
R. Friedberg;T. D. Lee;H. Ren
通讯作者:
R. Friedberg;T. D. Lee;H. Ren
影响因子:
8.6
作者:
J. Collins;M. Perry
通讯作者:
J. Collins;M. Perry
DOI:
10.1103/physreva.74.013614
发表时间:
2006-03
期刊:
Bulletin of the American Physical Society
影响因子:
--
作者:
D. Son
通讯作者:
D. Son
DOI:
10.1088/0954-3899/30/8/101
发表时间:
2004-04
期刊:
Journal of Physics G
影响因子:
--
作者:
Qun Wang
通讯作者:
Qun Wang