Work

Study of entropy production due to electroweak phase transition in Z2 symmetric extension of the Standard Model

Year: 2022

Type: article

Abstract: In this work, we consider the simple ${Z}_{2}$ symmetric extension to the Standard Model (SM) and proceed to study the nature of electroweak phase transition (EWPT) in the early Universe. We show that the nature of the phase transition changes from a smooth crossover in the SM to a strong first order with this addition of the real scalar. Furthermore, we show that the entropy release in this scenario is higher than that of the SM. This can lead to a strong dilution of the energy density of gravitational waves, as we show in the latter part of the paper.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/physrevd.106.095016

Authors: Arnab Chaudhuri, Jaydeb Das

Institutions: Homi Bhabha National Institute, Institute of Physics, Bhubaneshwar, University of Delhi

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: Council of Scientific and Industrial Research, India, Science and Engineering Research Board

Awards: G1553377786, G3454435466, G3873472944