Meissner screening mass in two-flavor quark matter at nonzero temperature

Abstract

We calculate the Meissner screening mass of gluons 4--7 in two-flavor quark matter at nonzero temperature. To this end, we study the effective potential of the 2SC/g2SC phases including a vector condensate $<g{A}_z^6>$ and calculate the Meissner mass from the potential curvature with respect to $<g{A}_z^6>$. We find that the Meissner mass becomes real at the critical temperature which is about the half of the chemical potential mismatch. The phase diagram of the neutral two-flavor color superconductor is presented in the plane of temperature and coupling strength. We indicate the unstable region for gluons 4--7 on the phase diagram.

arXiv comment4 pages, 3 figures, minor revisions to text, version to appear in PRD

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• Neutral Color Superconductivity Including Inhomogeneous Phases at Finite Temperature
• Gluonic phases, vector condensates, and exotic hadrons in dense QCD
• Chromomagnetic instability in two-flavor quark matter at nonzero temperature
• Meissner screening masses in gluonic phase
• Dynamical stabilization of runaway potentials and landscape of vacua at finite density
• Phase diagram of two-flavor quark matter: Gluonic phase at nonzero temperature
• Complete Gluonic Phase in Two-Flavor Color Superconductivity