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arxiv: 2102.11145 · v1 · pith:LCTZ4TLS · submitted 2021-02-22 · hep-ph · astro-ph.CO· gr-qc· hep-th

Robust approach to thermal resummation: Standard Model meets a singlet

Philipp M. Schicho , Tuomas V. I. Tenkanen , Juuso \"Osterman This is my paper

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classification hep-ph astro-ph.COgr-qchep-th
keywords dimensionaleffectivemodelnon-perturbativeperturbativereductionsingletstandard
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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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