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arXiv 2012.09182hep-thhep-exhep-ph
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隐扇区纠缠的统计耦合常数

Statistical coupling constants from hidden sector entanglement

Vijay Balasubramanian, Jonathan J. Heckman, Elliot Lipeles, Andrew P. Turner

备注：
20 pages, 1 figure, LaTeX
发表信息：
Phys. Rev. D 103, 066024 (2021)
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摘要：

弦论预言，自然界的耦合来自动力场。所有已知的以弦为动机的粒子物理模型也都有各种可能的额外扇区。这是常见的，这样的模量被冻结到一个背景值，额外的部门可以几乎完全解耦。在除可见扇区之外的所有扇区上执行部分跟踪通常将可见扇区置于混合状态，其中耦合常数从量子统计系综中得出。可见扇区和额外扇区之间这种纠缠的一个可观察到的结果是，所报告的耦合值似乎具有不可约的方差。在对实验数据的拟合中包括这种方差给出了一个重要的附加参数，该参数可用于将这种情况与耦合被视为固定参数的情况区分开来。能量范围和实验精度之间的相互作用使得新物理学的研究范围更广。

英文摘要：

String theory predicts that the couplings of Nature descend from dynamical fields. All known string-motivated particle physics models also come with a wide range of possible extra sectors. It is common to posit that such moduli are frozen to a background value, and that extra sectors can be nearly completely decoupled. Performing a partial trace over all sectors other than the visible sector generically puts the visible sector in a mixed state, with coupling constants drawn from a quantum statistical ensemble. An observable consequence of this entanglement between visible and extra sectors is that the reported values of couplings will appear to have an irreducible variance. Including this variance in fits to experimental data gives an important additional parameter that can be used to distinguish this scenario from the case where couplings are treated as fixed parameters. There is a consequent interplay between energy range and precision of an experiment that allows an extended reach for new physics.

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