Sum Rules in the CFL Phase of QCD at finite density

Details Sum Rules in the CFL Phase of QCD at finite density Sum Rules in the CFL Phase of QCD at finite density

2000-10-24

arxiv.org/abs/hep-ph/0010274v2

Phys.Lett. B501 (2001) 200-208

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, revtex, using epsfig. Typo in reference corrected

Scientific paper

10.1016/S0370-2693(01)00126-5

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.

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