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On AdS to dS transitions in higher-curvature gravity

MPG-Autoren
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Camanho,  Xian O.
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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1504.04496.pdf
(Preprint), 402KB

JHEP10(2015)179.pdf
(Verlagsversion), 265KB

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Zitation

Camanho, X. O., Edelstein, J. D., Gomberoff, A., & Sierra-Garcia, J. A. (2015). On AdS to dS transitions in higher-curvature gravity. Journal of high energy physics: JHEP, 2015(10): 179. doi:10.1007/JHEP10(2015)179.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0026-BBDD-5
Zusammenfassung
We study the possible existence of gravitational phase transitions from AdS to dS geometries in the context of higher-curvature gravities. We use Lanczos-Gauss-Bonnet (LGB) theory with a positive cosmological constant as a toy model. This theory has two maximally symmetric vacua with positive (dS) and negative (AdS) constant curvature. We show that a phase transition from the AdS vacuum to a dS black hole geometry takes place when the temperature reaches a critical value. The transition is produced by nucleation of bubbles of the new phase that expand afterwards. We claim that this phenomenon is not particular to the model under study, and shall also be part of generic gravitational theories with higher-curvature terms.