# Sphalerons and the electroweak phase transition in models with higher scalar representations

@article{Ahriche2014SphaleronsAT,
title={Sphalerons and the electroweak phase transition in models with higher scalar representations},
author={Amine Ahriche and Talal Ahmed Chowdhury and Salah Nasri},
journal={Journal of High Energy Physics},
year={2014},
volume={2014},
pages={1-20}
}
• Published 14 September 2014
• Physics
• Journal of High Energy Physics
A bstractIn this work we investigate the sphaleron solution in a SU(2) × U(1)X gauge theory, which also encompasses the Standard Model, with higher scalar representation(s) (J(i), X(i)). We show that the field profiles describing the sphaleron in higher scalar multiplet, have similar trends like the doublet case with respect to the radial distance. We compute the sphaleron energy and find that it scales linearly with the vacuum expectation value of the scalar field and its slope depends on the…
• Physics
Physical Review D
• 2020
By adding the dimension-six operator for the Higgs potential (denoted $\mathcal{O}_6$) in Standard Model, we have a first-order electroweak phase transition (EWPT) whose strength is larger than
• Physics
• 2018
We analyze the theoretical and phenomenological considerations for the electroweak phase transition and dark matter in an extension of the standard model with a complex scalar singlet (cxSM). In
A possible connection between the dark matter and strong first order electroweak phase transition, which is an essential ingredient of the electroweak baryogenesis, has been explored in this thesis.
• Physics
• 2015
We investigate scenarios in which electroweak baryogenesis can occur during an exotic stage of electroweak symmetry breaking in the early Universe. This transition is driven by the expectation value
• Physics
Journal of High Energy Physics
• 2019
We investigate the viability of electroweak baryogenesis in a model with a first order electroweak phase transition induced by the addition of two gauge singlet scalars. A vector-like lepton doublet
• Physics
Journal of Cosmology and Astroparticle Physics
• 2020
Multi-peaked spectra of the primordial gravitational waves are considered as a phenomenologically relevant source of information about the dynamics of sequential phase transitions in the early

## References

SHOWING 1-10 OF 53 REFERENCES

It is widely believed that the existence of singlet scalars in some standard model extensions can easily make the electroweak phase transition strongly first order, which is needed for the
• Physics
• 2009
The electroweak phase transition and the sphaleron decoupling condition in the minimal supersymmetric standard model are revisited taking the latest experimental data into account. The light Higgs
• Physics
• 2014
We improve the sphaleron decoupling condition in the real singlet-extended standard model. The sphaleron energy is obtained using the finite temperature one-loop effective potential with daisy
In this work, we study the electroweak sphalerons in a 5D background, where the fifth dimension lies on an interval. We consider two specific cases: flat space-time and the anti-de Sitter space-time
The electroweak phase transition is investigated by means of the perturbatively calculated high temperature effective potential. An analytic result to order g 4 , λ 2 is presented for the Abelian
• Physics
Physical review. D, Particles and fields
• 1987
The formalism of the sphaleron approximation to baryon-number violation in the standard model at temperatures near 1 TeV is studied and a suppression of the rate is found due to Landau damping and due to factors arising from zero modes.
Recently Bo''deker presented an effective infrared theory for the dynamics of Yang-Mills theory, suitable for studying the rate of baryon number violation in the early universe. We extend his theory