Role of quark-instanton liquid interactions in colour superconductivity phase

The interaction of light quarks and instanton liquid is analyzed at finite density of quark/baryon matter and in the phase of nonzero values of diquark (colour) condensate. It is shown that instanton liquid perturbation produced by such an interaction results in an essential increase of the critical value of quark chemical potential $\mu_c$ which provokes the perceptible increase of quark matter density around the expected onset of the colour superconductivity phase.Comment: 11 pages, 5 figure

Some peculiarities in response on filling up the Fermi sphere by quarks

Considering quarks as the quasi-particles of the model Hamiltonian with four-fermion interaction we study response on the process of filling up the Fermi sphere by quarks.Comment: 11 pages, 5 figures, minor language improvemen