The nucleonic matter spin–orbit and tensor correlations in the LOCV framework

Abstract

The nucleonic matter operator-dependent correlation functions in the coupled channels, i.e. the S13–D13 and the P23–F23 channels, for the Av18 interaction, are obtained by the use of lowest order constrained variational (LOCV) method. While, in the S13–D13 channel, only, the tensor-dependent correlation function is considered; in the P23–F23 channel, the spin-obit-dependent correlation function is included as well. It is demonstrated that the S13–D13 channel tensor-dependent correlation function is dominant in the symmetric nuclear matter (SNM). In other words, the P23–F23 channel tensor- and spin–orbit-dependent correlation functions do not play any significant role in the SNM. Whereas, it is shown that the spin–orbit-dependent correlation function notably declines the LOCV pure neutron matter (PNM) energy, especially at high densities. Finally, it should be declared that, generally, the spin–orbit-dependent correlation functions are short-range in comparison with those of tensor-dependent.