Ab initio study of neutron drops with chiral Hamiltonians

作者：Potter H D^*; Fischer S; Maris P; Vary J P; Binder S; Calci A; Langhammer J; Roth R

来源：Physics Letters B, 2014, 739: 445-450.

DOI：10.1016/j.physletb.2014.10.020

• Neutron drop
• Ab initio
• Chiral Hamiltonian
• No-core shell model
• Importance truncation
• Coupled cluster

We report ab initio calculations for neutron drops in a 10 MeV external harmonic-oscillator trap using chiral nucleon-nucleon plus three-nucleon interactions. We present total binding energies, internal energies, radii and odd-even energy differences for neutron numbers N = 2-18 using the no-core shell model with and without importance truncation. Furthermore, we present total binding energies for N = 8, 16, 20, 28, 40, 50 obtained in a coupled-cluster approach. Comparisons with quantum Monte Carlo results, where available, using Argonne v(8)%26apos; with three-nucleon interactions reveal important dependences on the chosen Hamiltonian.

• 出版日期2014-12-12