### Resumen

Abstract: 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, that contains Boulware-Deser instabilities, but shall also be part of generic gravitational theories with higher-curvature terms, where these problems are absent. A salient feature that emerges when a positive cosmological constant is considered is that the temperature in which these bubbles may form is bounded from above. Thermodynamically this property is related to quite an uncommon feature that this system exhibits, namely, the existence of a zeroth-order phase transition.

Idioma original | English |
---|---|

Número de artículo | 179 |

Publicación | Journal of High Energy Physics |

Volumen | 2015 |

N.º | 10 |

DOI | |

Estado | Published - 1 oct 2015 |

Publicado de forma externa | Sí |

### Huella dactilar

### ASJC Scopus subject areas

- Nuclear and High Energy Physics

### Citar esto

*Journal of High Energy Physics*,

*2015*(10), [179]. https://doi.org/10.1007/JHEP10(2015)179

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*Journal of High Energy Physics*, vol. 2015, n.º 10, 179. https://doi.org/10.1007/JHEP10(2015)179

**On AdS to dS transitions in higher-curvature gravity.** / Camanho, Xián O.; Edelstein, José D.; Gomberoff, Andrés; Sierra-Garcıa, J. Anıbal.

Resultado de la investigación: Article

TY - JOUR

T1 - On AdS to dS transitions in higher-curvature gravity

AU - Camanho, Xián O.

AU - Edelstein, José D.

AU - Gomberoff, Andrés

AU - Sierra-Garcıa, J. Anıbal

PY - 2015/10/1

Y1 - 2015/10/1

N2 - Abstract: 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, that contains Boulware-Deser instabilities, but shall also be part of generic gravitational theories with higher-curvature terms, where these problems are absent. A salient feature that emerges when a positive cosmological constant is considered is that the temperature in which these bubbles may form is bounded from above. Thermodynamically this property is related to quite an uncommon feature that this system exhibits, namely, the existence of a zeroth-order phase transition.

AB - Abstract: 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, that contains Boulware-Deser instabilities, but shall also be part of generic gravitational theories with higher-curvature terms, where these problems are absent. A salient feature that emerges when a positive cosmological constant is considered is that the temperature in which these bubbles may form is bounded from above. Thermodynamically this property is related to quite an uncommon feature that this system exhibits, namely, the existence of a zeroth-order phase transition.

KW - AdS-CFT Correspondence

KW - Black Holes

KW - Classical Theories of Gravity

KW - Models of Quantum Gravity

UR - http://www.scopus.com/inward/record.url?scp=84945385484&partnerID=8YFLogxK

U2 - 10.1007/JHEP10(2015)179

DO - 10.1007/JHEP10(2015)179

M3 - Article

AN - SCOPUS:84945385484

VL - 2015

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1126-6708

IS - 10

M1 - 179

ER -