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Published version

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2013

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/53286

Nonperturbative semiclassical stability of de Sitter spacetime for small metric deviations

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http://dx.doi.org/10.1103/PhysRevD.87.064019

Abstract

We consider the linearized semiclassical Einstein equations for small deviations around de Sitter spacetime including the vacuum polarization effects of conformal fields. Employing the method of order reduction, we find the exact solutions for general metric perturbations (of scalar, vector and tensor type). Our exact (nonperturbative) solutions show clearly that in this case de Sitter is stable with respect to small metric deviations and a late-time attractor. Furthermore, they also reveal a breakdown of perturbative solutions for a sufficiently long evolution inside the horizon. Our results are valid for any conformal theory, even self-interacting ones with arbitrarily strong coupling.

Subject

Cosmologia quàntica, Teoria quàntica de camps, Gravetat quàntica, Equacions de camp d'Einstein

Subject (English)

Quantum cosmology, Quantum field theory, Quantum gravity, Einstein field equations

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Articles publicats en revistes (Física de la Matèria Condensada)

Citation

FRÖB, Markus Benjamin, et al. Nonperturbative semiclassical stability of de Sitter spacetime for small metric deviations. Physical Review D. 2013. Vol. 87, num. 064019-1-064019-19. ISSN 1550-7998. [consulted: 11 of June of 2026]. Available at: https://hdl.handle.net/2445/53286

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