Monte Carlo Calculation for the neutron-rich Ca isotopes

Abstract

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.

Final version, to be published in EPJ A

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• Properties of trapped neutrons interacting with realistic nuclear Hamiltonians
• Computational Nuclear Quantum Many-Body Problem: The UNEDF Project
• Lattice Calculation of Thermal Properties of Low-Density Neutron Matter with Pionless NN Effective Field Theory
• Radii of neutron drops probed via the neutron skin thickness of nuclei
• Effective interactions and operators in no-core shell model
• The Auxiliary Field Diffusion Monte Carlo Method for Nuclear Physics and Nuclear Astrophysics
• From nuclear structure to neutron stars
• Quantum Monte Carlo study of inhomogeneous neutron matter