2015/02/28 by E. Dikmen, A. F. Lisetskiy, B. R. Barrett +3 · 1 citation
Physics and Astronomy · #nucl-th
paper · pdf · doi:10.1103/physrevc.91.064301
published as Phys. Rev. C 91, 064301 (2015) · 13 pages, 4 figures; revised to include additional figure, correct typos, extend discussions
arxiv created 2015/06/06 · arxiv updated 2015/06/09
We perform ab initio no-core shell-model calculations for A=18 and 19 nuclei in a 4ℏΩ, or N\rm max=4, model space by using the effective JISP16 and chiral N3LO nucleon-nucleon potentials and transform the many-body effective Hamiltonians into the 0ℏΩ model space to construct the A-body effective Hamiltonians in the sd-shell. We separate the A-body effective Hamiltonians with A=18 and A=19 into inert core, one-, and two-body components. Then, we use these core, one-, and two-body components to perform standard shell-model calculations for the A=18 and A=19 systems with valence nucleons restricted to the sd shell. Finally, we compare the standard shell-model results in the 0ℏΩ model space with the exact no-core shell model results in the 4ℏΩ model space for the A=18 and A=19 systems and find good agreement.