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arXiv 2303.05906hep-phastro-ph.HE
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集体中微子味振荡中的对称性与双极运动

Symmetry and bipolar motion in collective neutrino flavor oscillations

Zewei Xiong, Meng-Ru Wu, Yong-Zhong Qian

AI总结:

本研究在两味Bloch球上发现均匀致密中微子气体集体味振荡的几何对称性,据此得到周期性双极演化解析解,并通过数值计算揭示非对称构型的偏离或非周期行为。

摘要:

我们在两味Bloch球上识别出一种几何对称性,适用于均匀致密中微子气体的集体味振荡。基于该对称性,我们推导了周期性双极味演化的解析解。通过数值计算,我们表明对于不具备此对称性的构型,味演化会偏离双极味运动,甚至呈现非周期性模式。我们还讨论了这一发现在更一般的三味和非均匀情形中的意义。

英文摘要:

We identify a geometric symmetry on the two-flavor Bloch sphere for collective flavor oscillations of a homogeneous dense neutrino gas. Based on this symmetry, analytical solutions to the periodic bipolar flavor evolution are derived. Using numerical calculations, we show that for configurations without this symmetry, the flavor evolution displays deviations from the bipolar flavor motion or even exhibits aperiodic patterns. We also discuss the implication of our finding for more general three-flavor and inhomogeneous cases.

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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