Pseudogap of color superconductivity in heated quark matter

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 $(\mathrm{q}\mathrm{q}{)}_{\mathrm{s}\mathrm{o}\mathrm{f}\mathrm{t}}$ is responsible for the formation of the pseudogap. Our result suggests that the pseudogap is a universal phenomenon in strong coupling superconductors.