Robust approach to thermal resummation : Standard Model meets a singlet

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Schicho , P M , Tenkanen , T V I & Österman , J S 2021 , ' Robust approach to thermal resummation : Standard Model meets a singlet ' , Journal of High Energy Physics , no. 6 , 130 . https://doi.org/10.1007/JHEP06(2021)130

Title: Robust approach to thermal resummation : Standard Model meets a singlet
Author: Schicho, Philipp M.; Tenkanen, Tuomas V. I.; Österman, Juuso Samuli
Contributor: University of Helsinki, Helsinki Institute of Physics
University of Helsinki, University of Bern
University of Helsinki, Helsinki Institute of Physics
Date: 2021-06-21
Language: eng
Number of pages: 66
Belongs to series: Journal of High Energy Physics
ISSN: 1029-8479
URI: http://hdl.handle.net/10138/332646
Abstract: 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.
Subject: 114 Physical sciences
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