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arXiv 2302.04894hep-phhep-thnucl-th
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适用于任意模型的两圈硬热圈

Two-loop hard thermal loops for any model

Andreas Ekstedt

AI总结:

针对热等离子体中两圈硬热圈贡献可能显著但通用结果缺乏的问题,本文给出适用于任意表示和可重整化相互作用的矢量两圈自能,并扩展至高点函数。

摘要:

硬热圈描述软规范场在热等离子体中如何被屏蔽和阻尼,因此被用于计算输运系数、Sphaleron(斯格明子)速率、状态方程和粒子产生。然而,大多数计算采用一圈自能,而两圈贡献可能很大。为此,本文给出通用模型的矢量两圈自能:涵盖任意标量、费米子或矢量表示,以及所有可能的可重整化项。文中给出若干示例以展示结果,同时还给出了高点函数的两圈结果。

英文摘要:

Hard thermal loops describe how soft gauge fields are screened and damped in hot plasmas. As such they are used to calculate transport coefficients, Sphaleron rates, equations of state, and particle production. However, most calculations are done using one-loop self-energies. And two-loop contributions can be large. To that end this paper provides vector two-loop self-energies for generic models: Any scalar, fermion, or vector representation; and all possible renormalizable terms. Several examples are given to showcase the results. Two-loop results for higher-point functions are also given.

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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