Proton-neutron pairing in the deformed BCS approach
Nuclear Theory
2009-11-10 v1
Abstract
We examine isovector and isoscalar proton-neutron pairing correlations for the ground state of even-even Ge isotopes with mass number A=64-76 within the deformed BCS approach. For N=Z 64Ge the BCS solution with only T=0 proton-neutron pairs is found. For other nuclear systems (N>Z) a coexistence of a T=0 and T=1 pairs in the BCS wave function is observed. A problem of fixing of strengths of isoscalar and isovector pairing interactions is addressed. A dependence of number of like and unlike pairs in the BCS ground state on the difference between number of neutrons and protons is discussed. We found that for nuclei with N much bigger than Z the effect of proton-neutron pairing is small but not negligible.
Keywords
Cite
@article{arxiv.nucl-th/0308046,
title = {Proton-neutron pairing in the deformed BCS approach},
author = {Fedor Simkovic and Charal Moustakidis and Larisa Pacearescu and Amand Faessler},
journal= {arXiv preprint arXiv:nucl-th/0308046},
year = {2009}
}
Comments
24 pages, 6 figures