Evolution of a dense neutrino gas in matter and electromagnetic field

被引：14

作者：

Dvornikov, Maxim ^{[1
,2
]}

机构：

[1] NV Pushkov Inst Terr Magnetism Ionosphere & Radio, Troitsk 142190, Moscow Region, Russia

[2] Univ Sao Paulo, Inst Phys, BR-05315970 Sao Paulo, Brazil

来源：

NUCLEAR PHYSICS B | 2012年 / 855卷 / 03期

基金：

巴西圣保罗研究基金会;

关键词：

Weyl field; Background matter; Electromagnetic field; Majorana neutrino; Spin-flavor oscillations; Collective effects; MAJORANA NEUTRINOS; OSCILLATIONS; DECAY;

D O I：

10.1016/j.nuclphysb.2011.10.025

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We describe the system of massive Weyl fields propagating in a background matter and interacting with an external electromagnetic field. The interaction with an electromagnetic field is due to the presence of anomalous magnetic moments. To canonically quantize this system first we develop the classical field theory treatment of Weyl spinors in frames of the Hamilton formalism which accounts for the external fields. Then, on the basis of the exact solution of the wave equation for a massive Weyl field in a background matter we obtain the effective Hamiltonian for the description of spin-flavor oscillations of Majorana neutrinos in matter and a magnetic field. Finally, we incorporate in our analysis the neutrino self-interaction which is essential when the neutrino density is sufficiently high. We also discuss the applicability of our results for the studies of collective effects in spin-flavor oscillations of supernova neutrinos in a dense matter and a strong magnetic field. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：760 / 773

页数：14

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