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arXiv 2007.00068hep-phgr-qchep-ex
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量子引力随机扰动引起的中微子退相干

Neutrino decoherence from quantum gravitational stochastic perturbations

Thomas Stuttard, Mikkel Jensen

摘要:

在传播过程中受到随机扰动的中微子会经历退相干,从而使中微子振荡随距离衰减。如果引力是一种量子力,那么这种扰动可能是时空本身的波动造成的,包括中微子和虚黑洞之间的相互作用。在这项工作中,我们模拟的启发式中微子虚拟黑洞相互作用的中微子传播的情况下的影响,并评估由此产生的信号在天体物理和大气中微子。我们演示了如何在开放量子系统的框架中表示这些效应,允许将对这些系统的实验约束与量子引力效应联系起来。最后,我们认为,在目前的中微子实验中观察到的能量,这种普朗克尺度物理的能量依赖性,并表明普朗克尺度物理的灵敏度远低于“自然”的期望是可以实现的,在某些情况下。

英文摘要:

Neutrinos undergoing stochastic perturbations as they propagate experience decoherence, damping neutrino oscillations over distance. Such perturbations may result from fluctuations in space-time itself if gravity is a quantum force, including interactions between neutrinos and virtual black holes. In this work we model the influence of heuristic neutrino-virtual black hole interaction scenarios on neutrino propagation and evaluate the resulting signals in astrophysical and atmospheric neutrinos. We demonstrate how these effects can be represented in the framework of open quantum systems, allowing experimental constraints on such systems to be connected to quantum gravitational effects. Finally, we consider the energy-dependence of such Planck scale physics at energies observed in current neutrino experiments, and show that sensitivity to Planck scale physics well below the `natural' expectation is achievable in certain scenarios.

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