Monte Carlo Calculation for the neutron-rich Ca isotopes

Details Monte Carlo Calculation for the neutron-rich Ca isotopes Monte Carlo Calculation for the neutron-rich Ca isotopes

2006-05-24

arxiv.org/abs/nucl-th/0605064v2

Eur. Phys. J. A 35, 207 (2008)

Physics

Nuclear Physics

Nuclear Theory

Final version, to be published in EPJ A

Scientific paper

10.1140/epja/i2008-10536-3

We computed ground-state energies of calcium isotopes from 42Ca to 48Ca by means of the Auxiliary Field Diffusion Monte Carlo (AFDMC) method. Calculations were performed by replacing the 40Ca core with a mean-field self consistent potential computed using Skyrme interaction. The energy of the external neutrons is calculated by projecting the ground-state from a wave function built with the single particle orbitals computed in the self consistent external potential. The shells considered were the 1F_7/2 and the 1F_5/2. The Hamiltonian employed is semi-realistic and includes tensor, spin--orbit and three--body forces. While absolute binding energies are too deep if compared with experimental data, the differences between the energies for nearly all isotopes are in very good agreement with the experimental data.

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