On the stability in higher derivative quantum gravity
| Autor: | Filipe de O. Salles, Ilya L. Shapiro |
|---|---|
| Přispěvatelé: | Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Planck
quantum gravity: model derivative: high ghost: tachyon Stability (probability) Higher derivative gravity Gravitation chemistry.chemical_compound symbols.namesake High Energy Physics::Theory Quantum mechanics Physics stability: classical massive ghosts tachyons scale: Planck mathematical methods metric: perturbation stability chemistry gravitation space-time: perturbation symbols [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc] Quantum gravity Derivative (chemistry) |
| Zdroj: | 14th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Astrophysics, and Relativistic Field Theories 14th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Astrophysics, and Relativistic Field Theories, Jul 2015, Rome, Italy. pp.2243-2251, ⟨10.1142/9789813226609_0257⟩ |
| DOI: | 10.1142/9789813226609_0257⟩ |
| Popis: | International audience; We present a general, albeit brief review of the recent works on stability of tensor modes in the fourth and higher derivative models of quantum gravity. There are some indications that the presence of Planck-mass ghost does not imply an instability of the classical cosmological solutions with respect to metric perturbations if the initial frequency of such perturbation is far below the Planck scale. The situation is different for a tachyonic ghost, where there is no Planck-mass threshold. |
| Databáze: | OpenAIRE |
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