论文标题
搜索核心崩溃超新星模拟中的快速中微子风味转换模式
Searching for Fast Neutrino Flavor Conversion Modes in Core-collapse Supernova Simulations
论文作者
论文摘要
中微子在密集的中微子培养基中传播的中微子（例如核心崩溃的超新星中的中微子介质）可以在尺度上经历快速的风味转化，比真空中预期的短得多。据信，快速模式的出现的必要条件是，$ν_e$和$ \barν_e$相互交叉的角度分布。但是，大多数最先进的超新星模拟都没有提供此类详细的角度信息，而仅考虑少量中微子角分布的时刻。我们在这里提出了一种有效的方法，可以利用这些可用时刻来搜索超新星模拟中的快速模式。我们的方法基于在角度分布中搜索交叉的方法，可以与模拟提供的任何数量的矩一起使用，尽管当可用时可以捕获大量的交叉点。
Neutrinos propagating in dense neutrino media such as those in core-collapse supernovae can experience fast flavor conversions on scales much shorter than those expected in vacuum. It is believed that a necessary condition for the occurrence of fast modes is that the angular distributions of $ν_e$ and $\barν_e$ cross each other. However, most of the state-of-the-art supernova simulations do not provide such detailed angular information and instead, consider only a few moments of neutrino angular distributions. We here propose an efficient method to use these available few moments to search for fast modes in supernova simulations. Our method, which is based on searching for crossings in the angular distributions, can work with any number of moments provided by the simulation though a larger number of crossings can be captured when higher moments are available.
