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arXiv 0809.2940hep-phastro-phhep-ex
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超新星中微子:弱相互作用的强耦合效应

Supernova neutrinos: Strong coupling effects of weak interactions

G. L. Fogli, E. Lisi, A. Marrone, A. Mirizzi

摘要:

在核心坍缩超新星中,中微子和反中微子最初会受到弱中性流诱导的显著自相互作用的影响,这可能会导致强耦合效应对味道演化(集体跃迁)的影响。当自诱导集体跃迁与普通物质振荡解耦时,对这种效应的解释就简化了,就像我们讨论的物质密度分布一样。在这种情况下,可以使用近似的分析工具(钟摆模拟,能量谱交换)。对于倒置的中微子质量等级,效应的顺序包括:同步,双极振荡和光谱分裂。我们的模拟表明,这些制度的主要特点是不改变时,通过简化(角度平均)的治疗,以充分,多角度的数值实验。

英文摘要:

In core-collapse supernovae, neutrinos and antineutrinos are initially subject to significant self-interactions induced by weak neutral currents, which may induce strong-coupling effects on the flavor evolution (collective transitions). The interpretation of the effects is simplified when self-induced collective transitions are decoupled from ordinary matter oscillations, as for the matter density profile that we discuss. In this case, approximate analytical tools can be used (pendulum analogy, swap of energy spectra). For inverted neutrino mass hierarchy, the sequence of effects involves: synchronization, bipolar oscillations, and spectral split. Our simulations shows that the main features of these regimes are not altered when passing from simplified (angle-averaged) treatments to full, multi-angle numerical experiments.

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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