Phys. Rev. Lett. 76, 2416 - 2419 (1996)Neutron Drops and Skyrme Energy-Density Functionals |
PRL Celebrates 50 Years
This Week's Milestone Letters are from 1981: |
B. S. Pudliner1, A. Smerzi1,2, J. Carlson3, V. R. Pandharipande1, Steven C. Pieper4, and D. G. Ravenhall1
1Department of Physics, University of Illinois, Urbana, Illinois 61801-3080
2Laboratorio Nazionale del Sud, Istituto Nazionale di Fisica Nucleare, v Andrea Doria, 95125 Catania, Italy
3Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
4Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843
Received 5 September 1995
The Jπ = 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 v18 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.
©1996 The American Physical Society
URL: http://link.aps.org/abstract/PRL/v76/p2416
DOI: 10.1103/PhysRevLett.76.2416
PACS: 21.65.+f, 21.10.Dr, 21.60.Ka, 26.60.+c
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