Ground-state energy of a hard-sphere Fermi fluid. II. Spin and isospin
L. P. Benofy, J. L. Gammel, Robert M. Delaney +1 more
We evaluate the fourth-order Hugenholtz diagrams from the Rayleigh-Schr\"odinger many-body perturbation series for a repulsive, square-well potential. We consider a system containing four different equal-mass identically interacting particle species, similar to nuclear matter when only the repulsive core is considered. We use the results of these calculations to extend the L expansion of the ground-state energy of a Fermi fluid by one more term. From this extension, we are able to provide accurate values of the ground-state energy over a density range which includes that for infinite nuclear matter.
Physical Review C•Dec 1, 1993•1 citation