1S0 Nucleon Superfluidity in Neutron Star Matter

We investigate the nucleon superfluidity in the S-1(0) channel in neutron star matter using the relativistic mean field theory and the BCS theory. We discuss particularly the influence of the isovector scalar interaction which is considered by exchanging.. meson on the nucleon superfluidity. It is found that the.. meson leads to a growth of the nucleon S-1(0) pairing energy gaps in a middle density range of the existing nucleon superfluidity. In addition, when the density rho(B) > 0.36 fm(-3), the proton S-1(0) pairing energy gap obviously decreases. The density range of the proton S-1(0) superfluidity is narrowed due to the presence of delta mesons. In our results, the delta meson not only changes the EOS and bulk properties but also changes the cooling properties of neutron stars.