3P2-3F2 pairing in neutron matter with modern nucleon-nucleon potentials
M. Baldo, O. Elgaroey, L. Engvik, M. Hjorth-Jensen, H. -J. Schulze
Abstract
We present results for the 3P2 - 3F2 pairing gap in neutron matter with several realistic nucleon-nucleon potentials, in particular with recent, phase-shift equivalent potentials. We find that their predictions for the gap cannot be trusted at densities above ρ≈ 1.7ρ0, where ρ0 is the saturation density for symmetric nuclear matter. In order to make predictions above that density, potential models which fit the nucleon-nucleon phase shifts up to about 1 GeV are required.
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