PIRSA:13070071

Video URL

https://pirsa.org/13070071

Causal Dynamical Triangulations without Preferred Foliation

Loll, R. (2013). Causal Dynamical Triangulations without Preferred Foliation. Perimeter Institute for Theoretical Physics. https://pirsa.org/13070071

Loll, Renate. Causal Dynamical Triangulations without Preferred Foliation. Perimeter Institute for Theoretical Physics, Jul. 25, 2013, https://pirsa.org/13070071 

          @misc{ scivideos_PIRSA:13070071,
            doi = {10.48660/13070071},
            url = {https://pirsa.org/13070071},
            author = {Loll, Renate},
            keywords = {},
            language = {en},
            title = {Causal Dynamical Triangulations without Preferred Foliation},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2013},
            month = {jul},
            note = {PIRSA:13070071 see, \url{https://scivideos.org/pirsa/13070071}}
          }

Renate Loll Radboud Universiteit Nijmegen

Talk numberPIRSA:13070071
DOI10.48660/13070071
Source RepositoryPIRSA
Collection
Talk Type Conference

Abstract

We introduce a generalized version of the Causal Dynamical Triangulations (CDT) formulation of quantum gravity, in which the regularized, triangulated path integral histories maintain their causal properties, but do not have a preferred proper-time foliation. An extensive numerical study of the associated nonperturbative path integral in 2+1 dimensions shows that it can nevertheless reproduce the emergence of an extended de Sitter universe on large scales, a key feature of CDT quantum gravity. This suggests that the preferred foliation normally used in CDT is not a crucial (although convenient) part of its background structure.