Singlet and Triplet pairing in neutron matter

The presence of superfluidity in neutron stars can affect the cooling and dynamics of neutron stars in various ways. Model calculations employing realistic nuclear potentials in Bardeen-Cooper-Schrieffer theory generally suggest the development of a¹S₀ pairing gap at low densities and a³P₂-³F₂ pairing gap at higher densities. We have evaluated the pairing interaction by summing the "parquet" Feynman diagrams which include both ladder and ring diagrams systematically, plus a set of important non-parquet diagrams, making this the most comprehensive diagram-based approach presently available. Our results suggest a modest suppression of the¹S₀ pairing gap, a radical suppression of the³P₂-³F₂ triplet pairing gap, and an enhancement of³P₀ pairing.