Tensor forces and the Fermi liquid properties of nuclear matter

Abstract

Inclusion of the tensor q.p. interaction modifies the formulae of the Fermi liquid theory of nuclear matter. The calculations performed using several sets of the spin dependent Fermi liquid parameters show that the effect of tensor forces may be important. In particular, for the q.p. interaction derived using variational methods from the RSC and BJ N-N potentials, tensor forces imply instability of the ground state of nuclear matter near and above normal nuclear matter density. The instability occuring in the J -0, S = 1, T = 0 channel may be (and most probably is) an artifact of the approximations made in the calculations. It seems to be reasonable to say that the appearence of this instability reflects large uncertainty in our theoretical knowledge of the q.p. interaction in nuclear matter.