Continuum coupling and spectroscopic properties of nuclei

Details Continuum coupling and spectroscopic properties of nuclei Continuum coupling and spectroscopic properties of nuclei

2006-01-18

arxiv.org/abs/nucl-th/0601055v1

Physics

Nuclear Physics

Nuclear Theory

4 pages, 4 figures

Scientific paper

The nucleus is a correlated open quantum many-body system. The presence of states that are unbound to particle emission may have significant impact on spectroscopic properties of nuclei, especially those close to the particle drip lines. In the framework of the continuum shell model in the complex momentum-plane, we discuss salient effects of the continuum coupling on the spectroscopic factors, one-neutron overlap integrals, and energies of excited states in $^{6}$He and $^{18}$O. We demonstrate the presence of non-perturbative threshold effects in many-body wave functions of weakly-bound and unbound states.

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