Nuclear structure with accurate chiral perturbation theory nucleon-nucleon potential: Application to 6Li and 10B

[摘要] The authors calculate properties of A = 6 system using the accurate charge-dependent nucleon-nucleon (NN) potential at fourth order of chiral perturbation theory. By application of the ab initio no-core shell model (NCSM) and a variational calculation in the harmonic oscillator basis with basis size up to 16 {h_bar}{Omega} they obtain the {sup 6}Li binding energy of 28.5(5) MeV and a converged excitation spectrum. Also, they calculate properties of {sup 10}B using the same NN potential in a basis space of up to 8 {h_bar}{Omega}. The results are consistent with results obtained by standard accurate NN potentials and demonstrate a deficiency of Hamiltonians consisting of only two-body terms. At this order of chiral perturbation theory three-body terms appear. It is expected that inclusion of such terms in the Hamiltonian will improve agreement with experiment.

[发布日期] 2003-10-14 [发布机构] Lawrence Livermore National Laboratory

[关键词] Enantiomorphs;Excitation;Hamiltonians;Shell Models;71 Classical And Quantum Mechanics, General Physics