Comptes Rendus
Testing quantum gravity with cosmology / Tester les théories de la gravitation quantique à l'aide de la cosmologie
CDT and cosmology
[Les triangulations dynamiques causales et la cosmologie]
Comptes Rendus. Physique, Volume 18 (2017) no. 3-4, pp. 265-274.

Dans l'approche des triangulations dynamiques causales (CDT), la gravitation quantique est obtenue comme une limite d'échelle d'une intégrale de chemin non perturbative sur des espaces-temps dont la structure causale joue un rôle crucial dans la construction. Après quelques considérations générales sur la relation entre la gravité quantique et la cosmologie, nous examinons quels aspects des triangulations dynamiques causales sont potentiellement intéressants d'un point de vue cosmologique, en mettant l'accent sur l'émergence d'un univers de de Sitter en gravitation quantique dans l'approche CDT.

In the approach of Causal Dynamical Triangulations (CDT), quantum gravity is obtained as a scaling limit of a non-perturbative path integral over space-times whose causal structure plays a crucial role in the construction. After some general considerations about the relation between quantum gravity and cosmology, we examine which aspects of CDT are potentially interesting from a cosmological point of view, focusing on the emergence of a de Sitter universe in CDT quantum gravity.

Publié le :
DOI : 10.1016/j.crhy.2017.04.002
Keywords: Causal dynamic triangulation, Quantum gravity, Cosmology
Mot clés : Triangulation dynamique causale, Gravitation quantique, Cosmologie

Lisa Glaser 1 ; Renate Loll 1

1 Radboud University, Institute for Mathematics, Astrophysics and Particle Physics, Heyendaalseweg 135, NL-6525 AJ Nijmegen, The Netherlands
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Lisa Glaser; Renate Loll. CDT and cosmology. Comptes Rendus. Physique, Volume 18 (2017) no. 3-4, pp. 265-274. doi : 10.1016/j.crhy.2017.04.002. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2017.04.002/

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