Gravitational waves from composite dark sectors
(2024) In Journal of High Energy Physics 2024(2).- Abstract
We study under which conditions a first-order phase transition in a composite dark sector can yield an observable stochastic gravitational-wave signal. To this end, we employ the Linear-Sigma model featuring Nf = 3, 4, 5 flavours and perform a Cornwall-Jackiw-Tomboulis computation also accounting for the effects of the Polyakov loop. The model allows us to investigate the chiral phase transition in regimes that can mimic QCD-like theories incorporating in addition composite dynamics associated with the effects of confinement-deconfinement phase transition. A further benefit of this approach is that it allows to study the limit in which the effective interactions are weak. We show that strong first-order phase transitions... (More)
We study under which conditions a first-order phase transition in a composite dark sector can yield an observable stochastic gravitational-wave signal. To this end, we employ the Linear-Sigma model featuring Nf = 3, 4, 5 flavours and perform a Cornwall-Jackiw-Tomboulis computation also accounting for the effects of the Polyakov loop. The model allows us to investigate the chiral phase transition in regimes that can mimic QCD-like theories incorporating in addition composite dynamics associated with the effects of confinement-deconfinement phase transition. A further benefit of this approach is that it allows to study the limit in which the effective interactions are weak. We show that strong first-order phase transitions occur for weak effective couplings of the composite sector leading to gravitational-wave signals potentially detectable at future experimental facilities.
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- author
- Pasechnik, Roman LU ; Reichert, Manuel ; Sannino, Francesco and Wang, Zhi Wei
- organization
- publishing date
- 2024-02
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Compositeness, Models for Dark Matter, Phase Transitions in the Early Universe, Sigma Models
- in
- Journal of High Energy Physics
- volume
- 2024
- issue
- 2
- article number
- 159
- publisher
- Springer
- external identifiers
-
- scopus:85186208226
- ISSN
- 1029-8479
- DOI
- 10.1007/JHEP02(2024)159
- language
- English
- LU publication?
- yes
- id
- b31c06df-4604-41e8-8a27-1e8f1d8e3d1b
- date added to LUP
- 2024-03-20 10:50:59
- date last changed
- 2024-03-21 15:25:33
@article{b31c06df-4604-41e8-8a27-1e8f1d8e3d1b,
abstract = {{<p>We study under which conditions a first-order phase transition in a composite dark sector can yield an observable stochastic gravitational-wave signal. To this end, we employ the Linear-Sigma model featuring N<sub>f</sub> = 3, 4, 5 flavours and perform a Cornwall-Jackiw-Tomboulis computation also accounting for the effects of the Polyakov loop. The model allows us to investigate the chiral phase transition in regimes that can mimic QCD-like theories incorporating in addition composite dynamics associated with the effects of confinement-deconfinement phase transition. A further benefit of this approach is that it allows to study the limit in which the effective interactions are weak. We show that strong first-order phase transitions occur for weak effective couplings of the composite sector leading to gravitational-wave signals potentially detectable at future experimental facilities.</p>}},
author = {{Pasechnik, Roman and Reichert, Manuel and Sannino, Francesco and Wang, Zhi Wei}},
issn = {{1029-8479}},
keywords = {{Compositeness; Models for Dark Matter; Phase Transitions in the Early Universe; Sigma Models}},
language = {{eng}},
number = {{2}},
publisher = {{Springer}},
series = {{Journal of High Energy Physics}},
title = {{Gravitational waves from composite dark sectors}},
url = {{http://dx.doi.org/10.1007/JHEP02(2024)159}},
doi = {{10.1007/JHEP02(2024)159}},
volume = {{2024}},
year = {{2024}},
}