Sum rules in the CFL phase of QCD at finite density

DOI10.1016/S0370-2693(01)00126-5zbMATH Open0977.81516arXivhep-ph/0010274WikidataQ63956587 ScholiaQ63956587MaRDI QIDQ5933117

C. Manuel, M. H. G. Tytgat

Publication date: 5 June 2001

Published in: Physics Letters B (Search for Journal in Brave)

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 $f_{p}i$ 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.

Full work available at URL: https://arxiv.org/abs/hep-ph/0010274

zbMATH Keywords

colour-flavour locking phasecurrent correlatorsGoldstone mode decay constant

Mathematics Subject Classification ID

Strong interaction, including quantum chromodynamics (81V05)

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