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arXiv 2408.03439hep-th
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超越最小耦合的匹配与正定性

Matching and positivity beyond minimal coupling

Edoardo Alviani, Adam Falkowski

AI总结:

本文在单圈水平上将含非最小耦合大质量自旋物质粒子的紫外理论匹配到光子与引力子的低能有效理论,通过构造4光子和4引力子螺旋度振幅读出Wilson系数,发现超出领头阶的系数被正定性约束限制在理论空间中的小岛内。

摘要:

我们研究光子和引力子的低能有效理论,在单圈水平上将其匹配到一个包含大质量自旋物质粒子的紫外完备理论。该物质粒子允许具有非最小的电磁和引力相互作用。我们构造了圈内物质携带反常多极矩时的单圈4光子和4引力子螺旋度振幅,并读出了物质粒子质量以下有效理论中的Wilson系数。与最小耦合情形非常相似,超出领头阶的Wilson系数被限制在现有正定性约束所允许的更大理论空间中的小岛内。

英文摘要:

We study the low-energy effective theories of photons and gravitons, matching them at one loop to a UV completion with a massive spinning matter particle. The matter is allowed to have non-minimal electromagnetic and gravitational interactions. We construct the one-loop 4-photon and 4-graviton helicity amplitudes with matter in the loop carrying anomalous multipole moments, and we read off the Wilson coefficients in the effective theory below the matter particle mass. Much as in the case of minimal coupling, the Wilson coefficients beyond the leading order turn out to be confined to small islands in the much larger theory space allowed by existing positivity constraints.

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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