Meissner screening mass in two-flavor quark matter at nonzero temperature
O. Kiriyama
DOI 10.1103/PhysRevD.74.074019 · Physical Review D
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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 ⟨gAz6⟩ and calculate the Meissner mass from the potential curvature with respect to ⟨gAz6⟩. 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.
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