Quenching of spectroscopic factors for proton removal in oxygen isotopes

Details Quenching of spectroscopic factors for proton removal in oxygen isotopes Quenching of spectroscopic factors for proton removal in oxygen isotopes

2011-04-08

arxiv.org/abs/1104.1552v1

Phys.Rev.Lett.107:032501,2011

Physics

Nuclear Physics

Nuclear Theory

3 figures

Scientific paper

10.1103/PhysRevLett.107.032501

We present microscopic coupled-cluster calculations of the spectroscopic factors for proton removal from the closed-shell oxygen isotopes $^{14,16,22,24,28}$O with the chiral nucleon-nucleon interaction at next-to-next-to-next-to-leading order. We include coupling-to-continuum degrees of freedom by using a Hartree-Fock basis built from a Woods-Saxon single-particle basis. This basis treats bound and continuum states on an equal footing. We find a significant quenching of spectroscopic factors in the neutron-rich oxygen isotopes, pointing to enhanced many-body correlations induced by strong coupling to the scattering continuum above the neutron emission thresholds.

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