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arXiv 1709.00518hep-phastro-ph.COastro-ph.HE
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中微子味摆的奇异力学

Strange mechanics of the neutrino flavor pendulum

Lucas Johns, George M. Fuller

摘要:

我们确定在味转换的天体物理中微子的一类新的现象,其中一个共同的结果是抑制味转换。诉诸双极中微子系统和陀螺摆之间的等效性,我们发现这些现象在机械图像中有相当惊人的解释:在一个例子中,陀螺摆最初在一个方向上进动,然后停下来,开始在相反的方向上进动-一种违反直觉的行为,我们类比为一个玩具的运动称为响尾蛇。我们分析了早期宇宙中的这些行为,其中一个机会连接到无菌中微子暗物质出现,我们简要地建议他们如何可能表现在紧凑的对象环境。

英文摘要:

We identify in the flavor transformation of astrophysical neutrinos a new class of phenomena, a common outcome of which is the suppression of flavor conversion. Appealing to the equivalence between a bipolar neutrino system and a gyroscopic pendulum, we find that these phenomena have rather striking interpretations in the mechanical picture: in one instance, the gyroscopic pendulum initially precesses in one direction, then comes to a halt and begins to precess in the opposite direction---a counterintuitive behavior that we analogize to the motion of a toy known as a rattleback. We analyze these behaviors in the early universe, wherein a chance connection to sterile neutrino dark matter emerges, and we briefly suggest how they might manifest in compact-object environments.

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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