中微子的引力透镜效应：通过退相干视角
Gravitational lensing of neutrinos through the lens of decoherence
- Indian Institute of Science Education and Research Berhampur（印度教育研究研究所伯拉姆普尔分校）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
本文提出由未解析质量亚结构引起的随机引力透镜效应作为中微子退相干的新来源，为探测暗物质亚结构提供了新途径。
AI中文摘要：
我们提出了一种新的中微子退相干来源，该来源源于未解析质量亚结构引起的随机引力透镜效应。与传统模型将透镜势视为平滑且确定性的处理方式不同，我们将透镜势分解为一个平滑分量和一个致密团块的随机总体。亚结构引起的透镜势涨落对中微子时间延迟产生随机修正，从而在不同中微子质量本征态之间产生随机相对相位。对团块系综进行平均后，这些相位涨落转化为味相干性的有效衰减。这一框架将随机引力透镜效应与中微子现象学联系起来，并为通过天体物理中微子味跃迁探测暗物质亚结构提供了一条新途径。
英文摘要：
We propose a new source of neutrino decoherence arising from stochastic gravitational lensing by unresolved mass substructure. Unlike traditional models that treat the lensing potential as smooth and deterministic, we decompose the lensing potential into a smooth component and a stochastic population of compact clumps. The substructure induced fluctuations of the lensing potential generate stochastic corrections to the neutrino time delay, thereby producing random relative phases between different neutrino mass eigenstates. Averaging over the clump ensemble converts these phase fluctuations into an effective dampening of flavour coherence. This framework connects stochastic gravitational lensing with neutrino phenomenology and offers a novel route to probe dark matter substructure through astrophysical neutrino flavour transitions.
