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arXiv 2303.06211hep-thgr-qc
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单圈阶的辐射与反作用

Radiation and Reaction at One Loop

Asaad Elkhidir, Donal O'Connell, Matteo Sergola, Ingrid A. Vazquez-Holm

AI总结:

本研究利用散射振幅方法分析非弹性散射产生的次领头阶经典辐射场,揭示单圈振幅虚实部的不同物理作用,明确虚部对应自场驱动的辐射反作用,并关联多理论中的单圈Compton振幅,探讨相关理论间的相互作用。

摘要:

我们利用散射振幅方法研究次领头阶的经典辐射场。我们关注的辐射场由两个大质量点状物体发生非弹性散射时产生,可通过单圈振幅计算。我们表明,振幅的实部和虚部在辐射场中均发挥重要作用,但物理意义截然不同。振幅的虚部直接计算在物体自场影响下(即通过辐射反作用)发射的那部分辐射。辐射反作用的这一特性与电动力学、Yang-Mills理论和引力中的单圈Compton振幅直接相关。我们还从这一角度讨论了重整化、辐射反作用与经典场论之间引人入胜的相互作用。

英文摘要:

We study classical radiation fields at next-to-leading order using the methods of scattering amplitudes. The fields of interest to us are sourced when two massive, point-like objects scatter inelastically, and can be computed from one-loop amplitudes. We show that the real and imaginary parts of the amplitudes both play important but physically distinct roles in the radiation field. The amplitude's imaginary part directly computes the portion of radiation emitted under the influence of a body's self-field, i.e., through radiation reaction. This aspect of radiation reaction is directly linked to one-loop Compton amplitudes in electrodynamics, Yang-Mills theory and gravity. We also discuss the fascinating interplay between renormalisation, radiation reaction and classical field theory from this perspective.

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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