Approximation of the microscopic effective pairing interaction by the off-shell T matrix for free nucleon-nucleon scattering |
| |
| Authors: | M Baldo U Lombardo É E Saperstein M V Zverev |
| |
| Institution: | (1) Istituto Nazionale di Fisica Nucleare, Sezione di Catania, 57 Corso Italia, I-95129 Catania, Italya;(2) Dipartimento di Fisica, Università di Catania, 57 Corso Italia, I-95129 Catania, Italy;(3) Russian Research Centre Kurchatov Institute, pl. Kurchatova 1, Moscow, 123182, Russia |
| |
| Abstract: | The effective pairing interaction in the 1 S 0 channel as calculated microscopically within the Brueckner method for a planar slab of nuclear matter by using the separable version of the Paris nucleon-nucleon potential is investigated. The effective interaction is determined for the model space including all negative-energy single-particle states. An analysis is performed for two values of the chemical potential, μ=?8 and ?4 MeV. It is shown that, to a high precision, the effective interaction can be approximated by the off-shell T matrix for free nucleon-nucleon interaction, the T matrix in question being taken at a negative value of the total energy of two nucleons E=2μ. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
