Effective Theory of Superfluid Quark Matter

Details Effective Theory of Superfluid Quark Matter Effective Theory of Superfluid Quark Matter

2004-02-03

arxiv.org/abs/hep-ph/0402032v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, to appear in the proceedings of the KIAS-APCTP Symposium on Astro-Hadron Physics "Compact Stars: Quest for New State

Scientific paper

We provide a brief introduction to the high density effective theory of QCD. As an application, we consider the instanton correction to the perturbatively generated gap in the color superconducting phase. We show that the instanton correction becomes large for mu = 1.25 GeV in N_f=2 QCD, and for mu = 750 MeV in N_f=3 QCD with a massive strange quark. We also study some other numerical issues related to the magnitude of the gap. We find, in particular, that a renormalization group improved gap equation does not give results that are substantially different from a gap equation with a fixed coupling.

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