Video URL
https://pirsa.org/16050022Lattice quantum gravity and asymptotic safety
APA
Laiho, J. (2016). Lattice quantum gravity and asymptotic safety. Perimeter Institute for Theoretical Physics. https://pirsa.org/16050022
MLA
Laiho, John. Lattice quantum gravity and asymptotic safety. Perimeter Institute for Theoretical Physics, May. 11, 2016, https://pirsa.org/16050022
BibTex
@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/pirsa/16050022}} }
John Laiho Syracuse University
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.