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Electroweak phase transitions in multi-Higgs models : The case of Trinification-inspired THDSM

Vieu, Thibault ; Morais, António P. LU and Pasechnik, Roman LU (2018) In Journal of Cosmology and Astroparticle Physics 2018(7).
Abstract

The rich vacuum structure of multi-Higgs extensions of the Standard Model (SM) may have interesting cosmological implications for the electroweak phase transition (EWPT). As an important example of such class of models, we consider a particularly simple low-energy SM-like limit of a recently proposed Grand-Unified Trinification model with the scalar sector composed of two Higgs doublets and a complex singlet and with a global U(1) family symmetry. The fermion sector of this model is extended with a family of vector-like quarks which enhances CP violation. With the current study, we aim at exploring the generic vacuum structure and uncovering the features of the EWPT in this model relevant for cosmology. We show the existence of... (More)

The rich vacuum structure of multi-Higgs extensions of the Standard Model (SM) may have interesting cosmological implications for the electroweak phase transition (EWPT). As an important example of such class of models, we consider a particularly simple low-energy SM-like limit of a recently proposed Grand-Unified Trinification model with the scalar sector composed of two Higgs doublets and a complex singlet and with a global U(1) family symmetry. The fermion sector of this model is extended with a family of vector-like quarks which enhances CP violation. With the current study, we aim at exploring the generic vacuum structure and uncovering the features of the EWPT in this model relevant for cosmology. We show the existence of different phase transition patterns providing strong departure from thermal equilibrium. Most of these observations are not specific to the considered model and may generically be expected in other multi-Higgs extensions of the SM.

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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
baryon asymmetry, Cosmology of theories beyond the SM, particle physics - cosmology connection
in
Journal of Cosmology and Astroparticle Physics
volume
2018
issue
7
article number
014
publisher
IOP Publishing
external identifiers
  • scopus:85051710501
ISSN
1475-7516
DOI
10.1088/1475-7516/2018/07/014
language
English
LU publication?
yes
id
0cd308f3-60d8-40da-94d4-f735ca02c6cd
date added to LUP
2018-09-11 14:21:21
date last changed
2022-12-15 03:02:48
@article{0cd308f3-60d8-40da-94d4-f735ca02c6cd,
  abstract     = {{<p>The rich vacuum structure of multi-Higgs extensions of the Standard Model (SM) may have interesting cosmological implications for the electroweak phase transition (EWPT). As an important example of such class of models, we consider a particularly simple low-energy SM-like limit of a recently proposed Grand-Unified Trinification model with the scalar sector composed of two Higgs doublets and a complex singlet and with a global U(1) family symmetry. The fermion sector of this model is extended with a family of vector-like quarks which enhances CP violation. With the current study, we aim at exploring the generic vacuum structure and uncovering the features of the EWPT in this model relevant for cosmology. We show the existence of different phase transition patterns providing strong departure from thermal equilibrium. Most of these observations are not specific to the considered model and may generically be expected in other multi-Higgs extensions of the SM.</p>}},
  author       = {{Vieu, Thibault and Morais, António P. and Pasechnik, Roman}},
  issn         = {{1475-7516}},
  keywords     = {{baryon asymmetry; Cosmology of theories beyond the SM; particle physics - cosmology connection}},
  language     = {{eng}},
  month        = {{07}},
  number       = {{7}},
  publisher    = {{IOP Publishing}},
  series       = {{Journal of Cosmology and Astroparticle Physics}},
  title        = {{Electroweak phase transitions in multi-Higgs models : The case of Trinification-inspired THDSM}},
  url          = {{http://dx.doi.org/10.1088/1475-7516/2018/07/014}},
  doi          = {{10.1088/1475-7516/2018/07/014}},
  volume       = {{2018}},
  year         = {{2018}},
}