A realistic microscopic effective Hamiltonian ($H_{\mathrm{eff}}$) is employed with the spherical finite-temperature Hartree-Fock approximation to evaluate the thermodynamic properties of ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ and ${}_{}{}^{40}{}_{}{}^{}\mathrm{Ca}$. We scale $H_{\mathrm{eff}}$ to accommodate the $A$-dependent effects. We then adjust the Hamiltonian slightly to reproduce appropriate ground-state properties in the Hartree-Fock approximation. We find the thermal response of these nuclei to be substantially greater than that obtained with zero-range phenomenological forces.

• Received 17 May 1984

DOI:https://doi.org/10.1103/PhysRevLett.53.903