Proton-neutron random phase approximation studied by the Lipkin-Meshkov-Glick model in the SU(2) $\times$ SU(2)

Futoshi Minato

We study the proton-neutron RPA with an extended Lipikin-Meshkov-Glick model. We pay attention to the effect of correlated ground state and the case in which neutron and proton num…