Chiral effective field theory calculations of neutrino processes in dense matter

被引：34

作者：

Bacca, S. ^{[1
]}

Hally, K. ^{[1
,2
]}

Pethick, C. J. ^{[3
,4
]}

Schwenk, A. ^{[1
]}

机构：

[1] TRIUMF, Vancouver, BC V6T 2A3, Canada

[2] Acadia Univ, Dept Phys, Wolfville, NS B4P 2R6, Canada

[3] Niels Bohr Int Acad, DK-1200 Copenhagen O, Denmark

[4] NORDITA, S-10691 Stockholm, Sweden

来源：

PHYSICAL REVIEW C | 2009年 / 80卷 / 03期

基金：

加拿大自然科学与工程研究理事会;

关键词：

NUCLEON; BREMSSTRAHLUNG; EMISSIVITIES; SCATTERING;

D O I：

10.1103/PhysRevC.80.032802

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We calculate neutrino processes involving two nucleons at subnuclear densities using chiral effective field theory. Shorter range noncentral forces reduce the neutrino rates significantly compared with the one-pion exchange approximation currently used in supernova simulations. For densities rho < 10(14) g cm(-3), we find that neutrino rates are well constrained by nuclear interactions and nucleon-nucleon scattering data. As an application, we calculate the mean-square energy transfer in scattering of a neutrino from nucleons and find that collision processes and spin-dependent mean-field effects dominate over the energy transfer due to nucleon recoil.

引用

页数：4

共 25 条

[1] Low-momentum interactions with smooth cutoffs [J].