在有和没有μ子产生的一维核心坍缩超新星模型中的快速中微子味转换
Fast neutrino flavor conversions in one-dimensional core-collapse supernova models with and without muon creation
摘要：
在非常稠密的环境中，只要中微子轻子数的角分布过零，中微子就可以在短至几厘米的尺度上经历快速的味道转换。这项工作首次尝试确定超新星核心中不可忽略的μ子丰度及其与中微子的相互作用是否会影响这种交叉的发生。为此，我们采用最先进的一维核心坍缩超新星模拟，考虑模型，包括μ子中微子相互作用以及没有这些反应的模型。虽然状态方程和中微子输运中对μ子的一致处理似乎不会显著改变快模发生的条件，但它允许存在一种有趣的现象，即$μ-τ$部门的快速不稳定性。我们还表明，下面的超新星激波的交叉点是一个相对通用的功能的一维模拟调查，这与以前的文献报道。我们的研究结果突出了多维模拟与μ子创建的重要性，我们的结果必须在未来进行测试。
英文摘要：
In very dense environments, neutrinos can undergo fast flavor conversions on scales as short as a few centimeters provided that the angular distribution of the neutrino lepton number crosses zero. This work presents the first attempt to establish whether the non-negligible abundance of muons and their interactions with neutrinos in the core of supernovae can affect the occurrence of such crossings. For this purpose we employ state-of-the-art one-dimensional core-collapse supernova simulations, considering models that include muon-neutrino interactions as well as models without these reactions. Although a consistent treatment of muons in the equation of state and neutrino transport does not seem to modify significantly the conditions for the occurrence of fast modes, it allows for the existence of an interesting phenomenon, namely fast instabilities in the $μ-τ$ sector. We also show that crossings below the supernova shock are a relatively generic feature of the one-dimensional simulations under investigation, which contrasts with the previous reports in the literature. Our results highlight the importance of multi-dimensional simulations with muon creation, where our results must be tested in the future.
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