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arXiv 2109.06191hep-thgr-qchep-ph
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来自壳上Ampliferase的GR的RG

RG of GR from On-shell Amplitudes

Pietro Baratella, Dominik Haslehner, Maximilian Ruhdorfer, Javi Serra, Andreas Weiler

摘要:

我们研究了包含引力的一般有效场论的重整化群。我们遵循壳振幅的方法,它提供了一个简单而有效的方法来提取异常尺寸避免规范冗余的并发症。作为一个宝贵的工具,我们介绍了一个修改的螺旋度$\tilde{h}$下,引力子携带一个单位,而不是两个。有了这个修改后的螺旋性,我们很容易解释旧的和发现新的非重整化理论,包括引力子。我们提供了完整的结果为一个通用的最小耦合规范理论与标量和费米子和所有订单的$M_{Pl}$,以及为重整化的维度6运营商,包括至少一个引力子,所有多达四个外部粒子的单圈引力重整化。

英文摘要:

We study the renormalization group of generic effective field theories that include gravity. We follow the on-shell amplitude approach, which provides a simple and efficient method to extract anomalous dimensions avoiding complications from gauge redundancies. As an invaluable tool we introduce a modified helicity $\tilde{h}$ under which gravitons carry one unit instead of two. With this modified helicity we easily explain old and uncover new non-renormalization theorems for theories including gravitons. We provide complete results for the one-loop gravitational renormalization of a generic minimally coupled gauge theory with scalars and fermions and all orders in $M_{Pl}$, as well as for the renormalization of dimension-six operators including at least one graviton, all up to four external particles.

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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