Quantum Gravity from Causal Dynamical Triangulations

          @misc{ scivideos_PIRSA:13050055,
            doi = {10.48660/13050055},
            url = {https://pirsa.org/13050055},
            author = {Loll, Renate},
            keywords = {Quantum Gravity},
            language = {en},
            title = {Quantum Gravity from Causal Dynamical Triangulations},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2013},
            month = {may},
            note = {PIRSA:13050055 see, \url{https://scivideos.org/pirsa/13050055}}
          }
          

Abstract

By way of presenting some classic and many new results, my talk will indulge shamelessly in
advertising "Causal Dynamical Triangulations (CDT)" as a hands-on approach to nonperturbative quantum gravity that reaches where other approaches currently don't. After summarizing the rationale and basic ingredients of CDT quantum gravity and some of its key findings (like the emergence of a classical de Sitter space), I will focus on some very recent results: how we uncovered the presence of a second-order phase transition (so far unique in 4D quantum
gravity), news on the controversy between doing things the Lorentzian or the Euclidean way, and new results on the role of the preferred time slicing in CDT - all hopefully worth your while!