脉冲星定时对标准模型以外物理的约束
Pulsar Timing Constraints on Physics Beyond the Standard Model
摘要：
我们认为，在对其相关器的分析结构做出合理假设的情况下，大质量量子场通过其应力能量的量子涨落产生低频长波度规涨落。这可以追溯到广义相对论中规范对称性的非定域性质，它阻止了紫外尺度的有效屏蔽（我们称之为宇宙学非常数问题）。我们定义了一个协变和规范不变的观测探测线的视线时空曲率波动的观察者的过去的光锥，并表明，目前的脉冲星定时数据约束任何大质量粒子$m\lesssim 600$ GeV。这种天体物理学的束缚严重限制了物理学在量子引力尺度下超越标准模型的可能性。
英文摘要：
We argue that massive quantum fields source low-frequency long-wavelength metric fluctuations through the quantum fluctuations of their stress-energy, given reasonable assumptions about the analytic structure of its correlators. This can be traced back to the non-local nature of the gauge symmetry in General Relativity, which prevents an efficient screening of UV scales (what we call the cosmological non-constant problem). We define a covariant and gauge-invariant observable which probes line-of-sight spacetime curvature fluctuations on an observer's past lightcone, and show that current pulsar timing data constrains any massive particle to $m\lesssim 600$ GeV. This astrophysical bound severely limits the possibilities for physics beyond the standard model below the scale of quantum gravity.
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。
