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arXiv 2407.08598hep-phastro-ph.HEhep-th
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中微子输运方程的相干碰撞积分

Coherent collision integrals for neutrino transport equations

Kimmo Kainulainen, Harri Parkkinen

AI总结:

本文提出了中微子的量子动力学方程并推导了计算相干态散射率的Feynman规则,涵盖味与粒子-反粒子相干,简化了散射矩阵元和碰撞积分的计算,适用于超新星等任意质量中微子相干混合场景。

摘要:

我们提出了中微子的量子动力学方程,并推导了用于计算涉及相干态散射率的Feynman规则。这些规则同时涵盖了味相干和粒子-反粒子相干,使得写出散射矩阵元和碰撞积分能像使用通常的非相干Feynman规则一样直观简便。我们的结果适用于计算在具有任意质量的中微子相干混合背景下经常出现的碰撞率。我们给出了几个明确的例子,包括超新星中相干混合中微子的一些碰撞积分。

英文摘要:

We present quantum kinetic equations for neutrinos and derive Feynman rules for computing scattering rates involving coherent states. Our rules encompass both flavour- and particle-antiparticle coherence and allow writing down the scattering matrix elements and collision integrals with the same intuitive ease as with the usual non-coherent Feynman rules. Our results are useful for computing collision rates that arise routinely in the context of coherently mixing neutrinos with arbitrary masses. We give several explicit examples, including some collision integrals for coherently mixing neutrinos in supernovae.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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