Sum Rules in the CFL Phase of QCD at finite density
High Energy Physics - Phenomenology
2009-10-31 v2 Nuclear Theory
Abstract
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 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.
Cite
@article{arxiv.hep-ph/0010274,
title = {Sum Rules in the CFL Phase of QCD at finite density},
author = {Cristina Manuel and Michel H. G. Tytgat},
journal= {arXiv preprint arXiv:hep-ph/0010274},
year = {2009}
}
Comments
13 pages, revtex, using epsfig. Typo in reference corrected