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arXiv 2305.18529hep-th
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圈能动量空间Witten图解的解析结果

Analytic Results for Loop-Level Momentum Space Witten Diagrams

Chandramouli Chowdhury, Kajal Singh

AI总结:

本文在动量空间计算了共形耦合标量在一圈和两圈能级的波函数系数,利用递推关系简化圈积分,采用硬截断正则化并讨论重整化,结果可解析延拓至AdS跃迁振幅。

摘要:

本文在动量空间中,计算了共形耦合标量在耦合常数首阶的一圈和两圈能级下的波函数系数。我们借鉴平坦时空中的时间依赖相互作用,在适当近似下,这些结果也可用于研究一般宇宙学中的波函数系数。我们利用arxiv:{1709.02813}中发展的递推关系来正则化某些体点积分,并将波函数系数表示为简化圈积分的形式。我们采用硬截断正则化来处理圈积分,并进一步讨论了它们的重整化。我们的结果也可进行解析延拓,以获得AdS中跃迁振幅的答案。

英文摘要:

This paper presents an evaluation of the wave function coefficients for conformally coupled scalars at both one and two-loop levels at leading order in the coupling constant, in momentum space. We take cues from time-dependent interactions in flat spacetime and under suitable approximations, these can also be used to study the wave function coefficients for general cosmologies. We make use of recursion relations developed in arxiv:\{1709.02813\} to regularize certain bulk-point integrals and express the wave function coefficients in a form that simplifies the loop integrals. We utilize hard-cutoff regularization to regularize the loop integrals and further provide a discussion on their renormalization. Our results can also be analytically continued to obtain answers for transition amplitudes in AdS.

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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