Polarization contributions to the spin dependence of the effective interaction in neutron matter |
| |
Authors: | Schwenk Achim Friman Bengt |
| |
Affiliation: | Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA. aschwenk@mps.ohio-state.edu |
| |
Abstract: | We calculate the modification of the effective interaction of particles on the Fermi surface due to polarization contributions, with particular attention to spin-dependent forces. In addition to the standard spin-spin, tensor, and spin-orbit forces, spin nonconserving effective interactions are induced by screening in the particle-hole channels. Furthermore, a novel long-wavelength tensor force is generated. We compute the polarization contributions to second order in the low-momentum interaction V(low k) and find that the medium-induced spin-orbit interaction leads to a reduction of the 3P2 pairing gap for neutrons in the interior of neutron stars. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|