Details
| Original language | English |
|---|---|
| Article number | 034 |
| Number of pages | 21 |
| Journal | Journal of Cosmology and Astroparticle Physics |
| Volume | 2019 |
| Issue number | 2 |
| Publication status | Published - 14 Feb 2019 |
| Externally published | Yes |
Abstract
Keywords
- Cosmic strings, Domain walls, Inflation, Monopoles, Physics of the early universe, Primordial gravitational waves (theory)
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Astronomy and Astrophysics
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In: Journal of Cosmology and Astroparticle Physics, Vol. 2019, No. 2, 034, 14.02.2019.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Gravitational waves from global cosmic strings in quintessential inflation
AU - Bettoni, Dario
AU - Domènech, Guillem
AU - Rubio, Javier
N1 - Publisher Copyright: © 2019 IOP Publishing Ltd and Sissa Medialab.
PY - 2019/2/14
Y1 - 2019/2/14
N2 - The combination of non-minimal couplings to gravity with the post-inflationary kinetic-dominated era typically appearing in quintessential inflation scenarios may lead to the spontaneous symmetry breaking of internal symmetries and its eventual restoration at the onset of radiation domination. On general grounds, the breaking of these symmetries leads to the generation of short-lived topological defects that tend to produce gravitational waves until the symmetry is restored. We study here the background of gravitational waves generated by a global cosmic string network following the dynamical symmetry breaking and restoration of a U(1) symmetry. The resulting power spectrum depends on the duration of the heating process and it is potentially detectable, providing a test on the existence of non-minimal couplings to gravity and the characteristic energy scale of post-inflationary physics.
AB - The combination of non-minimal couplings to gravity with the post-inflationary kinetic-dominated era typically appearing in quintessential inflation scenarios may lead to the spontaneous symmetry breaking of internal symmetries and its eventual restoration at the onset of radiation domination. On general grounds, the breaking of these symmetries leads to the generation of short-lived topological defects that tend to produce gravitational waves until the symmetry is restored. We study here the background of gravitational waves generated by a global cosmic string network following the dynamical symmetry breaking and restoration of a U(1) symmetry. The resulting power spectrum depends on the duration of the heating process and it is potentially detectable, providing a test on the existence of non-minimal couplings to gravity and the characteristic energy scale of post-inflationary physics.
KW - Cosmic strings
KW - Domain walls
KW - Inflation
KW - Monopoles
KW - Physics of the early universe
KW - Primordial gravitational waves (theory)
UR - http://www.scopus.com/inward/record.url?scp=85062303306&partnerID=8YFLogxK
U2 - 10.48550/arXiv.1810.11117
DO - 10.48550/arXiv.1810.11117
M3 - Article
VL - 2019
JO - Journal of Cosmology and Astroparticle Physics
JF - Journal of Cosmology and Astroparticle Physics
SN - 1475-7516
IS - 2
M1 - 034
ER -