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arXiv 2404.04076gr-qchep-phhep-th
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中微子作为量子引力的可能探针

Neutrinos as possible probes for quantum gravity

Marco Danilo Claudio Torri, Lino Miramonti

AI总结:

本研究探究中微子与量子引力的相互作用,分析非标准相互作用对量子引力效应的模拟问题,强调需区分不同贡献,并探讨中微子领域退相干效应的探测及该领域的挑战与方向。

摘要:

本文旨在探究中微子与量子引力之间的相互作用,阐述若干利用这类粒子探测时空预期量子化结构的方案。更基础的量子引力理论的残余特征可通过修改自由粒子的色散关系及相关速度表现出来。在中微子领域,这些预期效应会改变不同能量的天体物理粒子的飞行时间,还会引入与种类相关的微扰,从而影响常规的中微子振荡模式。我们将阐明太阳中微子领域中非标准相互作用引发的微扰如何能模拟预期的量子引力效应。实际上,非标准相互作用的数学表述与CPT破缺微扰的数学表述是等价的。因此我们将强调,有必要厘清不同贡献的性质,以便在寻找量子引力效应时将它们区分开来。最后,我们将讨论在中微子领域探测由量子引力预期微扰引发的退相干效应的可能性。通过梳理当前的实验约束与观测结果,我们力图阐明中微子与量子引力之间的复杂关联,并探讨这一引人入胜的研究领域面临的挑战与未来方向。

英文摘要:

In this paper, we aim to explore the interplay between neutrinos and quantum gravity, illustrating some proposals about the use of these particles as probes for the supposed quantized structure of spacetime. The residual signatures of a more fundamental theory of quantum gravity can manifest themselves modifying the free particle dispersion relations and the connected velocity. In neutrino sector these supposed effects can modify the time of flight for astrophysical particles with different energies and can affect the usual neutrino oscillation pattern introducing species depending perturbations. We will highlight how perturbations caused by non-standard interactions in the solar neutrino sector can mimic the presumed quantum gravity effects. In fact, the mathematical formulation of non-standard interactions is equivalent to that of CPT-odd perturbations. We will, therefore, emphasize the need to identify the nature of different contributions in order to disentangle them in the search for quantum gravity effects. As a final point we will discuss the possibility to detect in the neutrino sector decoherence effects caused by the quantum gravity supposed perturbations. By reviewing current experimental constraints and observations, we seek to shed light on the intricate relationship between neutrinos and quantum gravity, and discuss the challenges and future directions in this fascinating field of research.

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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