Extracting electromagnetic signatures of spacetime fluctuations
Extracting electromagnetic signatures of spacetime fluctuations
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DOI：
10.1088/1361-6382/ad2970
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发表时间：
2023-06
影响因子：
3.5
通讯作者：
B. Sharmila;Sander M. Vermeulen;A. Datta
中科院分区：
文献类型：
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作者：
B. Sharmila;Sander M. Vermeulen;A. Datta
我们提出了一种形式主义来辨别电磁辐射的时空度规的波动的影响。形式主义通过测量电磁场相关性来工作，同时允许对所涉及的假设进行明确的评估。作为一个应用的形式主义，我们提出了一个模型的时空波动，出现在单一的真空折射率的随机波动，和两个共同定位的迈克尔逊干涉仪。我们比较使用该模型预测的干涉信号的实验数据从Holometer和aLIGO。我们表明，如果信号表现在干涉仪敏感的频率，可能的时空波动的强度和规模可以受到约束。的界限，从而获得的时空波动的强度和规模，也被证明是更严格的比以前使用天文观测光学频率的界限。形式主义使我们能够评估拟议的实验，如QUEST约束量子时空波动和设计新的。
We present a formalism to discern the effects of fluctuations of the spacetime metric on electromagnetic radiation. The formalism works via the measurement of electromagnetic field correlations, while allowing a clear assessment of the assumptions involved. As an application of the formalism, we present a model of spacetime fluctuations that appear as random fluctuations of the refractive index of the vacuum in single, and two co-located Michelson interferometers. We compare an interferometric signal predicted using this model to experimental data from the Holometer and aLIGO. We show that if the signal manifests at a frequency at which the interferometers are sensitive, the strength and scale of possible spacetime fluctuations can be constrained. The bounds, thus obtained, on the strength and scale of the spacetime fluctuations, are also shown to be more stringent than the bounds obtained previously using astronomical observation at optical frequencies. The formalism enables us to evaluate proposed experiments such as QUEST for constraining quantum spacetime fluctuations and to design new ones.