Abstract
We show that the correlations generated in the ground state of nuclei by the isovector and isoscalar pairing forces can be treated with high precision as a condensate of alpha-like quartets. To treat these correlations, the quartet condensation model (QCM) is extended to the treatment of spherically symmetric isovector and isoscalar pairing forces. Within the QCM, we discuss the competition between and pairing correlations in the case of a two-level model and for nuclei with nucleons moving in the open shells above , and . We show that, in systems, isovector and isoscalar proton-neutron pairing correlations always coexist.
- Received 21 January 2016
DOI:https://doi.org/10.1103/PhysRevC.93.054320
©2016 American Physical Society