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Radion dynamics, heavy Kaluza–Klein resonances and gravitational waves.
- Source :
-
International Journal of Modern Physics A: Particles & Fields; Gravitation; Cosmology; Nuclear Physics . 11/30/2022, Vol. 37 Issue 33, p1-16. 16p. - Publication Year :
- 2022
-
Abstract
- In this paper, we study the confinement/deconfinement phase transition of the radion field in a warped model with a polynomial bulk potential. The backreaction of the radion on the metric is taken into account by using the superpotential formalism, while the radion effective potential is obtained from a novel formulation which can incorporate the backreaction. The phase transition leads to a stochastic gravitational wave background that depends on the energy scale of the first Kaluza–Klein resonance, m KK . This work completes previous studies in the following aspects: (i) we detail the evaluation of the radion spectrum; (ii) we report on the mismatches between the thick wall approximation and the numerical bounce solution; (iii) we include a suppression factor in the spectrum of sound waves accounting for their finite lifetime; and (iv) we update the bound on m KK in view of the O3 LIGO and Virgo data. We find that the forthcoming gravitational wave interferometers can probe scenarios where m KK ≲ 1 0 9 TeV , while the O3-run bounds rule out warped models with 1 0 4 TeV ≲ m KK ≲ 1 0 7 TeV exhibiting an extremely strong confinement/deconfinement phase transition. [ABSTRACT FROM AUTHOR]
- Subjects :
- *PHASE transitions
*RESONANCE
*PSEUDOPOTENTIAL method
*INTERFEROMETERS
Subjects
Details
- Language :
- English
- ISSN :
- 0217751X
- Volume :
- 37
- Issue :
- 33
- Database :
- Academic Search Index
- Journal :
- International Journal of Modern Physics A: Particles & Fields; Gravitation; Cosmology; Nuclear Physics
- Publication Type :
- Academic Journal
- Accession number :
- 161586769
- Full Text :
- https://doi.org/10.1142/S0217751X22400231