SINGLET-TRIPLET FERMION COUPLING THEORY

At zero temperature, the superfluid Fermi liquid self-consistency equa tions that describe superposition of states with singlet and triplet f ermion coupling are obtained and analyzed. The conditions for creating such states are found. Equations for the critical temperature of the phase transition from a one-gap (singlet or triplet) superfluid state to a singlet-triplet superfluid state and the temperature dependence o f the order parameters near the transition temperature are derived. A mechanism for creating new states is proposed, and the thermodynamic s tability of these states is studied.