LOWEST ORDER CONSTRAINED VARIATIONAL CALCULATION FOR POLARIZED LIQUID ³He AT FINITE TEMPERATURE

Abstract

We have investigated some of the thermodynamic properties of spin polarized liquid 3 He at finite temperature using the lowest order constrained variational method. For this system, the free energy, entropy and pressure are calculated for different values of the density, temperature and polarization. We have also presented the dependence of specific heat, saturation density and incompressibility on the temperature and polarization.

LOCV CALCULATIONS FOR POLARIZED LIQUID 3He: THE EFFECT OF THREE-BODY CLUSTER ENERGY

“…23 In recent years, we have studied the thermodynamic properties of both normal and polarized liquid 3 He at finite temperature. [24][25][26] Our results show a good agreement with the corresponding empirical values. In these calculations, the lowest order constrained variational (LOCV) method based on the cluster expansion of the energy functional has been used.…”

“…This figure shows that for each value of the density, the energy of our system increases by increasing the polarization which is in agreement with our previous calculations. 24,27 From Fig. 1, we have obtained the upper bound −1.65 K at ρ = 0.0117Å −3 for the binding energy of unpolarized liquid 3 He (ξ = 0.0).…”

LOCV CALCULATIONS FOR POLARIZED LIQUID 3He WITH THE SPIN-DEPENDENT CORRELATION

“…In recent years, we have studied both normal and polarized liquid 3 He at zero and finite temperature [16,17,18,19]. In these calculations, the lowest order constrained variational (LOCV) method based on the cluster expansion of the energy functional has been used.…”