Neutron Drops and Skyrme Energy-Density Functionals

Details Neutron Drops and Skyrme Energy-Density Functionals Neutron Drops and Skyrme Energy-Density Functionals

1995-10-12

arxiv.org/abs/nucl-th/9510022v1

Phys.Rev.Lett. 76 (1996) 2416-2419

Physics

Nuclear Physics

Nuclear Theory

Scientific paper

10.1103/PhysRevLett.76.2416

The J$^{\pi}$=0$^+$ ground state of a drop of 8 neutrons and the lowest 1/2$^-$ and 3/2$^-$ states of 7-neutron drops, all in an external well, are computed accurately with variational and Green's function Monte Carlo methods for a Hamiltonian containing the Argonne $v_{18}$ two-nucleon and Urbana IX three-nucleon potentials. These states are also calculated using Skyrme-type energy-density functionals. Commonly used functionals overestimate the central density of these drops and the spin-orbit splitting of 7-neutron drops. Improvements in the functionals are suggested.

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