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arXiv 1808.01372gr-qc
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软引力子散射和BMS电荷的泛函方法

A functional approach to soft graviton scattering and BMS charges

Jordan Wilson-Gerow, Colby DeLisle, Philip Stamp

摘要:

我们考虑物质系统与软引力子的相互作用。我们使用功能程函展开来处理红外发散,并引入一个“复合生成功能”,使我们能够计算系统的时间演化的退相干功能。这些技术使我们能够制定散射问题的方式处理一致的红外效应,以及明显的同形不变性。我们展示了如何渐近形式的退相干功能可以写在无穷多个保守的费用与渐近BMS对称性,并允许我们解决的问题,有多少信息在散射过程中丢失。

英文摘要:

We consider the interaction between a matter system and soft gravitons. We use a functional eikonal expansion to deal with the infrared divergences, and introduce a "composite generating functional" which allows us to calculate a decoherence functional for the time evolution of the system. These techniques allow us to formulate scattering problems in a way which deals consistently with infrared effects, as well as being manifestly diffeomorphism invariant. We show how the asymptotic form of the decoherence functional can be written in terms of the infinitely many conserved charges associated with asymptotic BMS symmetries, and allow us to address the question of how much information is lost during the scattering.

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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