The Fermi-liquid approach generalized to superfluid systems is used to
derive general formulas for the normal and abnormal distribution func
tions (DF) for quasiparticles of a superfluid Fermi liquid (SFL) consi
sting of electrically neutral fermions with spin-triplet pairing (the
spin of a pair s=1, the orbital angular momentum I of the pair being a
n arbitrary odd number) in a static uniform magnetic field, taking int
o account the Landau spin-exchange Fermi-liquid interaction at tempera
tures 0<T<T-c (T-c is the temperature of phase transition from the nor
mal to the superfluid state). In deriving the DF, the explicit form of
the energy functional (EF) for SFL is not used. A system of coupled e
quations is obtained for the order parameter, energy of quasiparticles
, and effective magnetic field for the SFL under investigation in the
case of an EF quadratic in DF, The obtained DF and the system of equat
ions are applicable for describing both unitary and nonunitary phases
of superfluid He-3 in a magnetic field, e.g., for determining the magn
etization and magnetic susceptibility of these phases. (C) 1998 Americ
an Institute of Physics.