Reuter, M. (2014). The Asymptotic Safety Program: New results and an inconvenient truth. Perimeter Institute for Theoretical Physics. https://pirsa.org/14040108
MLA
Reuter, Martin. The Asymptotic Safety Program: New results and an inconvenient truth. Perimeter Institute for Theoretical Physics, Apr. 25, 2014, https://pirsa.org/14040108
BibTex
@misc{ scivideos_PIRSA:14040108,
doi = {10.48660/14040108},
url = {https://pirsa.org/14040108},
author = {Reuter, Martin},
keywords = {},
language = {en},
title = {The Asymptotic Safety Program: New results and an inconvenient truth},
publisher = {Perimeter Institute for Theoretical Physics},
year = {2014},
month = {apr},
note = {PIRSA:14040108 see, \url{https://scivideos.org/index.php/pirsa/14040108}}
}
We briefly review the various components and their conceptual status of the full Asymptotic Safety Program which aims at finding a nonperturbative infinite-cutoff limit of a regularized functional integral for a quantum field theory of gravity. It is explained why in the continuum formulation based on the Effective Average Action the key requirement of background independence unavoidably results in a "bi-metric" framework, and recent results on truncated RG flows of bi-metric actions are presented. They suggest that the next generation of truncations that must be explored should be of bi-metric type. As an application, a method of characterizing and counting physical states is shown to arise.
