A New Spin on Neutrino Quantum Kinetics

A New Spin on Neutrino Quantum Kinetics
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中微子量子动力学的新旋转

DOI:
10.1016/j.physletb.2015.04.066
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发表时间:
2014
期刊:
arXiv: High Energy Physics - Phenomenology
影响因子:
--
通讯作者:
A. Vlasenko
A. Vlasenko
中科院分区:
--
文献类型:
--
作者:
V. Cirigliano;G. Fuller;A. Vlasenko

文献摘要

被引文献

相似文献

最近的研究表明,在各向异性环境中,量子动力学方程(QKE)中出现了一个相干的自旋-翻转项,它控制着中微子的味道和自旋在热密介质中的演化。对于Majorana中微子和Dirac中微子,这一项可以协调中微子-反中微子的我们讨论了相干自旋翻转项的物理起源,并给出了球几何双味模型中QKE的显式表达式。在此背景下,我们证明了相干中微子的自旋转换依赖于中微子的绝对质量和Majorana相。
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.