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arXiv 1503.03485hep-phastro-ph.SR
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二维模型中稠密中微子流的自诱导味不稳定性

Self-induced flavor instabilities of a dense neutrino stream in a two-dimensional model

Alessandro Mirizzi, Gianpiero Mangano, Ninetta Saviano

摘要:

我们考虑一个简化模型的自诱导味转换的致密中微子气体在两个维度,显示新的解决方案,自发地打破空间对称性的初始条件。由于中微子-中微子相互作用引起的对称性破缺,中微子气体的相干行为变得不稳定。这种不稳定性在总体的风味含量中产生大的空间变化。此外,它还导致不同的净轻子数通量域的创建。中微子气体从相干态到非相干态的转变与流动从层流态到湍流态的转变类似。这些发现将与超新星核心流出的中微子的自诱导转换有关。

英文摘要:

We consider a simplifed model for self-induced flavor conversions of a dense neutrino gas in two dimensions, showing new solutions that spontaneously break the spatial symmetries of the initial conditions. As a result of the symmetry breaking induced by the neutrino-neutrino interactions, the coherent behavior of the neutrino gas becomes unstable. This instability produces large spatial variations in the flavor content of the ensemble. Furthermore, it also leads to the creation of domains of different net lepton number flux. The transition of the neutrino gas from a coherent to incoherent behavior shows an intriguing analogy with a streaming flow changing from laminar to turbulent regime. These finding would be relevant for the self-induced conversions of neutrinos streaming-off a supernova core.

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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