THEORY OF SUPERFLUIDITY OF NUCLEAR-MATTER BASED ON THE FERMI-LIQUID APPROACH

We use Landau's concept of a Fermi liquid to study the theory of super fluidity of symmetric nuclear matter. For the nucleon-nucleon potentia l we take the effective Skyrme interaction (the Ska, SkM, SkM, and RA TP potentials). The density-dependence of the transition temperature i s studied for different superfluid phases of nuclear matter. We show t hat the phase in which there is proton-nuclear pairing in the spin-tri plet state is realized at densities close to the saturation density. W e demonstrate that phase transitions in density from the given phase t o a phase with singlet-singlet or triplet-triplet nucleon pairing are possible. The density-dependence at T=0 of the energy gap in the quasi particle spectrum is established for the case of unitary and nonunitar y spin states. Finally, we establish that the phase transition to a no nunitary phase is accompanied by the appearance of magnetization, whic h is found as a function of the nuclear matter density. (C) 1997 Ameri can Institute of Physics.