Screening Effects on $^1S_0$ Pairing in Neutron Matter

Caiwan Shen, U. Lombardo, P. Schuck, W. Zuo, N. Sandulescu

Published 2002-12-05, updated 2003-02-17Version 3

The $^1S_0$ superfluidity of neutron matter is studied in the framework of the generalized Gorkov equation. The vertex corrections to the pairing interaction and the self-energy corrections are introduced and approximated on the same footing in the gap equation. A suppression of the pairing gap by more than 50% with respect to the BCS prediction is found, which deeply changes the scenario for the dynamical and thermal evolution of neutron stars.