Entropy production due to electroweak phase transition in the framework of two Higgs doublet model

TL;DR

This paper investigates the entropy production during a first order electroweak phase transition within the two-Higgs-doublet model, considering experimental constraints and analyzing vacuum transition dynamics.

Contribution

It provides a detailed analysis of entropy release during the electroweak phase transition in 2HDM, incorporating recent experimental constraints.

Findings

Entropy production varies across parameter space.

First order EWPT is viable within current experimental bounds.

Detailed vacuum transition analysis in 2HDM.

Abstract

We revisit the possibility of first order electroweak phase transition~(EWPT) in one of the simplest extensions of the Standard Model (SM) scalar sector, namely the two-Higgs-doublet model~(2HDM). We take into account the ensuing constraints from the electroweak precision tests, Higgs signal strengths, and the recent LHC bounds from direct scalar searches. By studying the vacuum transition in 2HDM, we discuss in detail the entropy released in the first order EWPT in various parameter planes of 2HDM.