论文标题
中微子散射模型和快速风味转换的自谐度
Self-consistency in models of neutrino scattering and fast flavor conversion
论文作者
论文摘要
最近的几项数值研究检查了中微子中性中性散射对快速风味转化率（FFC）的影响。这些研究显然是冲突，有些人发现风味转化的增强，而另一些则发现了抑制作用。报告增强的所有人都使用均匀的模型，我们详细讨论了他们因此面临的自持矛盾问题。我们在我们自己的均匀计算中重现了散射增强的FFC，表明它是对中性和带电的散射发生的，并且是由于随着时间的推移对角度分布的各向同性化。因为这是没有自一致性的计算的特征，所以我们得出结论，增强效应是不明的天体物理相关性，并且可能不会在自然环境中发生。
Several recent numerical studies have examined the effects of neutrino neutral-current scattering on fast flavor conversion (FFC). Those studies are in apparent conflict, with some finding enhancement of flavor conversion and others finding suppression. The ones that report enhancement all use homogeneous models, and we discuss in detail the self-consistency issues that they face as a result. We reproduce scattering-enhanced FFC in our own homogeneous calculations, showing that it occurs for both neutral- and charged-current scattering and that it is due to isotropization of the angular distributions over time. Because this is the very feature of the calculations that is not self-consistent, we conclude that the enhancement effect is of unclear astrophysical relevance and may not occur in natural environments.
