期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 3, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP03(2017)007
关键词
Beyond Standard Model; Effective field theories; Thermal Field Theory
资金
- Vilho, Yrjo and Kalle Vaisala Foundation
- Academy of Finland [1273545, 1303622]
- People Programme (Marie Sklodowska-Curie actions) of the European Union Seventh Framework Programme [PIEF-GA-2013629425]
- Munich Institute for Astro-and Particle Physics (MIAPP) of the DFG
We derive an effective dimensionally reduced theory for the Standard Model augmented by a real singlet scalar. We treat the singlet as a superheavy field and integrate it out, leaving an effective theory involving only the Higgs and SU(2)(L) x U(1)(y) gauge fields, identical to the one studied previously for the Standard Model. This opens up the possibility of efficiently computing the order and strength of the electroweak phase transition, numerically and nonperturbatively, in this extension of the Standard Model. Understanding the phase diagram is crucial for models of electroweak baryogenesis and for studying the production of gravitational waves at thermal phase transitions.
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