A new spin on neutrino quantum kinetics

被引：55

作者：

Cirigliano, Vincenzo ^{[1
,2
]}

Fuller, George M. ^{[2
,3
]}

Vlasenko, Alexey ^{[2
,3
]}

机构：

[1] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA

[2] New Mexico Consortium, Neutrino Engn Inst, Los Alamos, NM 87545 USA

[3] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

来源：

PHYSICS LETTERS B | 2015年 / 747卷

基金：

美国国家科学基金会;

关键词：

OSCILLATIONS; FLAVOR; MECHANISM;

D O I：

10.1016/j.physletb.2015.04.066

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Recent studies have demonstrated that in anisotropic environments a coherent spin-flip term arises in the Quantum Kinetic Equations (QKEs) which govern the evolution of neutrino flavor and spin in hot and dense media. This term can mediate neutrino-antineutrino transformation for Majorana neutrinos and active-sterile transformation for Dirac neutrinos. We discuss the physical origin of the coherent spin-flip term and provide explicit expressions for the QKEs in a two-flavor model with spherical geometry. In this context, we demonstrate that coherent neutrino spin transformation depends on the absolute neutrino mass and Majorana phases. (C) 2015 The Authors. Published by Elsevier B.V.

引用

页码：27 / 35

页数：9

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