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arXiv 2102.11145hep-phastro-ph.COgr-qchep-th
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热重定的稳健方法:标准模型满足单线态

Robust approach to thermal resummation: Standard Model meets a singlet

Philipp M. Schicho, Tuomas V. I. Tenkanen, Juuso Österman

摘要:

单用微扰论不能描述电弱相变的热力学。我们审查的技术相结合的微扰和非微扰的方法来克服这一挑战。因此,主要的主题是高温降维教程。我们提出了一个明确的推导与一个真正的单重标量和计算的热有效势在两个循环的顺序。特别是,我们详细介绍了一个真正的单重扩展标准模型的降维。由此产生的有效理论将影响未来的非微扰研究的基础上晶格模拟以及纯微扰调查。

英文摘要:

Perturbation theory alone fails to describe thermodynamics of the electroweak phase transition. We review a technique combining perturbative and non-perturbative methods to overcome this challenge. Accordingly, the principal theme is a tutorial of high-temperature dimensional reduction. We present an explicit derivation with a real singlet scalar and compute the thermal effective potential at two-loop order. In particular, we detail the dimensional reduction for a real-singlet extended Standard Model. The resulting effective theory will impact future non-perturbative studies based on lattice simulations as well as purely perturbative investigations.

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