Pseudogap of Color Superconductivity in Heated Quark Matter

Abstract

We show that the pseudogap of the quark density of states is formed in hot quark matter as a precursory phenomenon of the color superconductivity on the basis of a low-energy effective theory. We clarify that the decaying process of quarks near Fermi surface to a hole and the diquark soft mode (qq)_{soft} is responsible for the formation of the pseudogap. Our result suggests that the pseudogap is a universal phenomenon in strong coupling superconductors.

arXiv commentIntroduction is largely rewritten and minor changes are made in other parts of the text. Some referenes with comments are added. Numerical errors in the figures are corrected. To appear in Phys. Rev. D

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• Stable gapless superconductivity at strong coupling
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