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Thermal effects and scalar modes in the cosmological propagation of gravitational waves
- Source :
- Digital.CSIC. Repositorio Institucional del CSIC, instname
- Publication Year :
- 2021
- Publisher :
- arXiv, 2021.
-
Abstract
- We consider thermal effects in the propagation of gravitational waves on a cosmological background. In particular, we consider scalar field cosmologies and study gravitational modes near cosmological singularities. We point out that the contribution of thermal radiation can heavily affect the dynamics of gravitational waves giving enhancement or dissipation effects both at quantum and classical level.These effects are considered both in General Relativity and in modified theories like $F(R)$ gravity which can be easily reduced to scalar-tensor cosmology. The possible detection and disentanglement of standard and scalar gravitational modes on the stochastic background are also discussed.<br />Comment: 21 pages, accepted for publication in Physics of the Dark Universe
- Subjects :
- Physics
High Energy Physics - Theory
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Gravitational wave
General relativity
Scalar (mathematics)
FOS: Physical sciences
Astronomy and Astrophysics
General Relativity and Quantum Cosmology (gr-qc)
Cosmology
General Relativity and Quantum Cosmology
Gravitational waves
Gravitation
Classical mechanics
Alternative theories of gravity
High Energy Physics - Theory (hep-th)
Space and Planetary Science
Gravitational singularity
Quantum
Scalar field
Astrophysics - Cosmology and Nongalactic Astrophysics
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Digital.CSIC. Repositorio Institucional del CSIC, instname
- Accession number :
- edsair.doi.dedup.....97948e52e583e3264b3fbd0cb7ef762e
- Full Text :
- https://doi.org/10.48550/arxiv.2104.10936