论文标题
超新星中微子集体振荡的湍流指纹
Turbulence Fingerprint on Collective Oscillations of Supernova Neutrinos
论文作者
论文摘要
我们揭示了一种新颖的机制，通过这种机制，湍流密度的波动可以引起核心 - 散射超新星的集体中微子风味转化，即不同傅立叶模式之间风味不稳定性的泄漏。泄漏机制通过将风味转换模式耦合在不同尺度上，这又使风味不稳定性在傅立叶空间中几乎无处不在，从而使其在致密中微子气味的风味稳定性上留下了著名的指纹。这种效果的最显着结果是，即使在没有所谓的快速模式的情况下，它也可以在最深的超新星区域中存在明显的风味转化。这是湍流对核心偏离超新星物理学的另一个关键影响，这可以深刻地改变我们对超新星环境中中微子风味转化的理解。
We bring to light a novel mechanism through which turbulent matter density fluctuations can induce collective neutrino flavor conversions in core-collapse supernovae, i.e., the leakage of flavor instabilities between different Fourier modes. The leakage mechanism leaves its notable fingerprint on the flavor stability of a dense neutrino gas by coupling flavor conversion modes on different scales which in turn, makes the flavor instabilities almost ubiquitous in the Fourier space. The most remarkable consequence of this effect is in that it allows for the presence of significant flavor conversions in the deepest supernova regions even in the absence of the so-called fast modes. This is yet another crucial impact of turbulence on the physics of core-collapse supernovae which can profoundly change our understanding of neutrino flavor conversions in the supernova environment.
