Neutrino bremsstrahlung in neutron matter from effective nuclear interactions

被引：22

作者：

Schwenk, A ^{[1
]}

Jaikumar, P

Gale, C

机构：

[1] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

[2] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

来源：

PHYSICS LETTERS B | 2004年 / 584卷 / 3-4期

基金：

美国国家科学基金会; 加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1016/j.physletb.2004.01.036

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We revisit the emissivity from neutrino pair bremsstrahlung in neutron-neutron scattering, nn --> nnnu(ν) over bar, which was calculated from the one-pion exchange potential including correlation effects by Friman and Maxwell. Starting from the free-space low-momentum nucleon-nucleon interaction V-low k, we include tensor, spin-orbit and second-order medium-induced non-central contributions to the scattering amplitude in neutron matter. We find that the screening of the nucleon-nucleon interaction reduces the emissivity from neutrino bremsstrahlung for densities below nuclear matter density. We discuss the implications of medium modifications for the cooling of neutron stars via neutrino emission, taking into account recent results for the polarization effects on neutron superfluidity. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：241 / 250

页数：10

共 30 条

[1] QUASIPARTICLE INTERACTION IN LIQUID HE-3 [J].