BCS-BEC crossover in a relativistic superfluid and its significance to quark matter

被引：84

作者：

Nishida, Y ^{[1
]}

Abuki, H

机构：

[1] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

[2] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan

来源：

PHYSICAL REVIEW D | 2005年 / 72卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.72.096004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The character change of a superfluid state due to the variation of the attractive force is investigated in the relativistic framework with a massive fermion. Two crossovers are found. One is a crossover from the usual BCS state to the Bose-Einstein condensation (BEC) of bound fermion pairs. The other is from the BEC to the relativistic Bose-Einstein condensation (RBEC) of nearly massless bound pairs where antiparticles as well as particles dominate the thermodynamics. Possible realization of the BEC and RBEC states in the quark matter is also pointed out.

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页数：5

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