[Les triangulations dynamiques causales et la cosmologie]
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.
Mot clés : Triangulation dynamique causale, Gravitation quantique, Cosmologie
Lisa Glaser 1 ; Renate Loll 1
@article{CRPHYS_2017__18_3-4_265_0,
author = {Lisa Glaser and Renate Loll},
title = {CDT and cosmology},
journal = {Comptes Rendus. Physique},
pages = {265--274},
publisher = {Elsevier},
volume = {18},
number = {3-4},
year = {2017},
doi = {10.1016/j.crhy.2017.04.002},
language = {en},
}
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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