A1 Journal article (refereed)
On the validity of perturbative studies of the electroweak phase transition in the Two Higgs Doublet model (2019)

Kainulainen, K., Keus, V., Niemi, L., Rummukainen, K., Tenkanen, T. V. I., & Vaskonen, V. (2019). On the validity of perturbative studies of the electroweak phase transition in the Two Higgs Doublet model. Journal of High Energy Physics, 2019(6), Article 75. https://doi.org/10.1007/JHEP06(2019)075

JYU authors or editors

Publication details

All authors or editors: Kainulainen, Kimmo; Keus, Venus; Niemi, Lauri; Rummukainen, Kari; Tenkanen, Tuomas V. I.; Vaskonen, Ville

Journal or series: Journal of High Energy Physics

ISSN: 1126-6708

eISSN: 1029-8479

Publication year: 2019

Volume: 2019

Issue number: 6

Article number: 75

Publisher: Springer

Publication country: Germany

Publication language: English

DOI: https://doi.org/10.1007/JHEP06(2019)075

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/64794

Web address where publication is available: https://arxiv.org/abs/1904.01329

Abstract

Making use of a dimensionally-reduced effective theory at high temperature, we perform a nonperturbative study of the electroweak phase transition in the Two Higgs Doublet model. We focus on two phenomenologically allowed points in the parameter space, carrying out dynamical lattice simulations to determine the equilibrium properties of the transition. We discuss the shortcomings of conventional perturbative approaches based on the resummed effective potential — regarding the insufficient handling of infrared resummation but also the need to account for corrections beyond 1-loop order in the presence of large scalar couplings — and demonstrate that greater accuracy can be achieved with perturbative methods within the effective theory. We find that in the presence of very large scalar couplings, strong phase transitions cannot be reliably studied with any of the methods.

Free keywords: effective field theories; thermal field theory; cosmology of theories beyond the SM; lattice quantum field theory

Contributing organizations

Related projects

Ministry reporting: Yes

Reporting Year: 2019

JUFO rating: 2