RELATIVISTIC BOSE-GAS

被引：81

作者：

BERNSTEIN, J ^{[1
]}

DODELSON, S ^{[1
]}

机构：

[1] HARVARD UNIV,GORDON MCKAY LAB,CAMBRIDGE,MA 02138

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.66.683

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We calculate the partition function for a relativistic Bose-Einstein gas. The excitation energies are identified and compared with known results in various limits. In particular, this treatment shows how the Goldstone bosons of a spontaneously broken symmetry and the quasiparticles of the nonrelativistic gas emerge as special cases of one general formula. New results are obtained for the spectrum of Goldstone modes in a medium of nonzero density, and the fully relativistic case is discussed along with a possible cosmological application.

引用

页码：683 / 686

页数：4