Sum rules in the CFL phase of QCD at finite density

被引：18

作者：

Manuel, C ^{[1
]}

Tytgat, MHG ^{[1
]}

机构：

[1] CERN, Div Theory, CH-1211 Geneva 23, Switzerland

来源：

PHYSICS LETTERS B | 2001年 / 501卷 / 3-4期

关键词：

D O I：

10.1016/S0370-2693(01)00126-5

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the asymmetry between the vector current and axial-vector current correlators in the colour-flavour locking (CFL) phase of QCD at finite density. Using Weinberg's sum rules, we compute the decay constant f(pi) of the Goldstone modes and find agreement with previous derivations. Using Das's sum rule, we also estimate the contribution of electromagnetic interactions to the mass of the charged modes. Finally, we comment on low temperature corrections to the effective field theory describing the Goldstone bosons. (C) 2001 Published by Elsevier Science B.V.

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页码：200 / 208

页数：9

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