VARIATIONAL CALCULATIONS FOR NORMAL LIQUID 3He AT FINITE TEMPERATURE USING THE SPIN-DEPENDENT CORRELATION FUNCTION

Abstract

By considering a spin dependence for the correlation function, the thermodynamic properties of normal liquid 3 He have been investigated by employing a lowest order constrained variational approach. It is seen that the spin-singlet state has a smaller contribution in the potential energy of normal liquid 3 He with respect to the spin-triplet state. It is seen that at high temperatures, the free energy of normal liquid 3 He in cases of spin-dependent and spin-independent correlation functions are nearly identical. The equations of state of these two cases are nearly similar too.