Microscopic analysis of T=1 and T=0 proton-neutron correlations in N = Z nuclei

摘要

The competition between the isovector (T = 1) and isoscalar (T = 0) proton-neutron (p-n) correlations in N = Z nuclei is investigated by calculating their correlation energies with a realistic effective interaction which reproduces observed nuclear properties very well, in a strict shell model treatment. It is shown in the realistic shell model that the double-differences of binding energies (B (A + pn : T) + B (A) - B (A + p) - B (A + n)) (B (A) being the binding energy) are good indicators of the T = 1 and T = 0 p-n correlations. Each of them, however, originates in plural kinds of correlations with T = 1 or T = 0. (C) 2004 Elsevier B.V. All rights reserved.