Evaluation of pressure dependent chemical potential of helium atom in liquid He-3

Using Mishra and Tripathy model Hamiltonian (J. Low.. Temp. Phys., J L T P 75, 79 (1989), the perssure dependent chemical potential of Helium atom has been evaluated in liquid He-3. The result show that chemical potential of helium atom in liquid increases with pressure, which are in satisfactory ag reement with the experimental data at least for higher pressure. For low pr essure, as per experimental observation negative value of chemical potentia l is not obtained. This is because Mishra and Tripathy model Hamiltonian is based on repulsive nature of potential. Taking more realistic potential ha ving both replusive and attractive part, the, negative behaviour of the che mical potential of He-3 atom in liquid He-3 is observed.