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arXiv 2109.10345hep-thgr-qc
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世界线量子场论的经典双拷贝

Classical Double Copy of Worldline Quantum Field Theory

Canxin Shi, Jan Plefka

摘要:

将最近发展起来的经典引力散射的世界线量子场论(WQFT)形式推广到耦合到双伴随标量场理论、Yang-Mills理论和量子引力的大质量带电点粒子.我们建立了一个经典的双拷贝关系,在这些WQFT的经典观测量(偏转,辐射)。双伴随标量场理论固定了从杨-米尔斯到狄龙-引力的双拷贝的定域结构。使用这个Eikonal散射相位(或自由能的WQFT)计算到下一个领先的顺序(NLO)的耦合常数使用双副本,以及直接找到完全一致。我们澄清我们的方法,以前的研究在有效场论形式主义的关系。最后,WQFT的双副本的量子散射振幅的经典极限的双副本关系的等价性显式NLO。

英文摘要:

The recently developed worldline quantum field theory (WQFT) formalism for the classical gravitational scattering of massive bodies is extended to massive, charged point particles coupling to bi-adjoint scalar field theory, Yang-Mills theory, and dilaton-gravity. We establish a classical double copy relation in these WQFTs for classical observables (deflection, radiation). The bi-adjoint scalar field theory fixes the locality structure of the double copy from Yang-Mills to dilaton-gravity. Using this the eikonal scattering phase (or free energy of the WQFT) is computed to next-to-leading order (NLO) in coupling constants using the double copy as well as directly finding full agreement. We clarify the relation of our approach to previous studies in the effective field theory formalism. Finally, the equivalence of the WQFT double copy to the double copy relation of the classical limit of quantum scattering amplitudes is shown explicitly up to NLO.

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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