PIRSA:16050022

Video URL

https://pirsa.org/16050022

Lattice quantum gravity and asymptotic safety

Laiho, J. (2016). Lattice quantum gravity and asymptotic safety. Perimeter Institute for Theoretical Physics. https://pirsa.org/16050022

Laiho, John. Lattice quantum gravity and asymptotic safety. Perimeter Institute for Theoretical Physics, May. 11, 2016, https://pirsa.org/16050022 

          @misc{ scivideos_PIRSA:16050022,
            doi = {10.48660/16050022},
            url = {https://pirsa.org/16050022},
            author = {Laiho, John},
            keywords = {Quantum Gravity},
            language = {en},
            title = {Lattice quantum gravity and asymptotic safety},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2016},
            month = {may},
            note = {PIRSA:16050022 see, \url{https://scivideos.org/index.php/pirsa/16050022}}
          }

John Laiho Syracuse University

Talk numberPIRSA:16050022
DOI10.48660/16050022
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

We present results from a study of Euclidean dynamical triangulations in an attempt to make contact with Weinberg's asymptotic safety scenario. We find that a fine-tuning is necessary in order to recover semiclassical behavior, and that once this tuning is performed, our simulations provide evidence in support of the asymptotic safety scenario for gravity.  We discuss our motivation for the tuning and present our numerical results. Finally, we discuss what our simulations imply for the dimension of the ultraviolet critical surface, which sets the number of free parameters in the theory.