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Quantum (in)stability of maximally symmetric space-times
- Publication Year :
- 2023
-
Abstract
- Classical gravity coupled to a CFT$_4$ (matter) is considered. The effect of the quantum dynamics of matter on gravity is studied around maximally symmetric spaces (flat, de Sitter and Anti de Sitter). The structure of the graviton propagator is modified and non-trivial poles appear due to matter quantum effects. The position and residues of such poles are mapped as a function of the relevant parameters, the central charge of the CFT$_4$, the two $R^2$ couplings of gravity as well as the curvature of the background space-time. The instabilities induced are determined. Such instabilities can be important in cosmology as they trigger the departure from de Sitter space and in some regions of parameters are more important than the well-known scalar instabilities. It is also determined when the presence of such instabilities is unreliable if the associated scales are larger than the ``species" cutoff of the gravitational theory.<br />(v2) Added dedication to the memory of S. Katsanevas. 109 pages + appendix, 29 figures + appendix
- Subjects :
- effect: quantum
High Energy Physics - Theory
cosmological model
symmetry: space-time
pole
FOS: Physical sciences
General Relativity and Quantum Cosmology (gr-qc)
space-time: background
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology (hep-ph)
background: curvature
anti-de Sitter
gravitation: coupling
structure
Minkowski
field theory: conformal
space: de Sitter
[PHYS.HTHE]Physics [physics]/High Energy Physics - Theory [hep-th]
trigger
stability
High Energy Physics - Phenomenology
High Energy Physics - Theory (hep-th)
[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]
central charge
graviton: propagator
[PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc]
space-time: classical
gravitation: classical
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....d4e32115f8602b980e57fd84a7cba403