Continuum effects and three-nucleon forces in neutron-rich oxygen isotopes
Abstract
We employ interactions from chiral effective field theory and compute binding energies, excited states, and radii for isotopes of oxygen with the coupled-cluster method. Our calculation includes the effects of three-nucleon forces and of the particle continuum, both of which are important for the description of neutron-rich isotopes in the vicinity of the nucleus O-24. Our main results are the placement of the neutron drip-line at O-24, the assignment of spins, parities and resonance widths for several low-lying states of the drip-line nucleus, and an efficient approximation that incorporates the effects of three-body interactions.
Keywords
Cite
@article{arxiv.1202.2839,
title = {Continuum effects and three-nucleon forces in neutron-rich oxygen isotopes},
author = {G. Hagen and M. Hjorth-Jensen and G. R. Jansen and R. Machleidt and T. Papenbrock},
journal= {arXiv preprint arXiv:1202.2839},
year = {2012}
}
Comments
4 pages, 3 figures; small correction of effective 3NF and slight change of the corresponding parameters; updated figures and table; main results and conclusions unchanged