Back to Search
Start Over
Two dimensional nearly de Sitter gravity
- Source :
- Journal of High Energy Physics, Vol 2021, Iss 1, Pp 1-60 (2021), Journal of High Energy Physics
- Publication Year :
- 2021
- Publisher :
- SpringerOpen, 2021.
-
Abstract
- We study some aspects of the de Sitter version of Jackiw-Teitelboim gravity. Though we do not have propagating gravitons, we have a boundary mode when we compute observables with a fixed dilaton and metric at the boundary. We compute the no-boundary wavefunctions and probability measures to all orders in perturbation theory. We also discuss contributions from different topologies, borrowing recent results by Saad, Shenker and Stanford. We discuss how the boundary mode leads to gravitational corrections to cosmological observables when we add matter. Finally, starting from a four dimensional gravity theory with a positive cosmological constant, we consider a nearly extremal black hole and argue that some observables are dominated by the two dimensional nearly de Sitter gravity dynamics.<br />Comment: 66 pp, 15 figs; v2: ref added
- Subjects :
- High Energy Physics - Theory
Nuclear and High Energy Physics
Gravity (chemistry)
FOS: Physical sciences
General Relativity and Quantum Cosmology (gr-qc)
Cosmological constant
01 natural sciences
General Relativity and Quantum Cosmology
Gravitation
High Energy Physics::Theory
De Sitter universe
0103 physical sciences
Extremal black hole
Models of Quantum Gravity
lcsh:Nuclear and particle physics. Atomic energy. Radioactivity
010306 general physics
Mathematical physics
Physics
Matrix Models
010308 nuclear & particles physics
Graviton
Black hole
High Energy Physics - Theory (hep-th)
lcsh:QC770-798
Dilaton
2D Gravity
Subjects
Details
- Language :
- English
- ISSN :
- 10298479
- Volume :
- 2021
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Journal of High Energy Physics
- Accession number :
- edsair.doi.dedup.....7eb0195fa616b0178a2b07e3faba5e7c