Mass spectrum of diquarks and mesons in the color-flavor locked phase of dense quark matter

摘要

The spectrum of meson and diquark excitations of dense quark matter is considered in the framework of the Nambu-Jona-Lasinio model with three types of massless quarks in the presence of a quark number chemical potential mu. We investigate the effective action of meson and diquark fields both at sufficiently large values of mu >mu(c) approximate to 330 MeV, where the color-flavor locked (CFL) phase is realized, and in the chirally broken phase of quark matter (mu mu(c).