Tensor network formulation of quantum gravity

19 Jun 2019, 09:40
20m
Shimao 3A

Shimao 3A

Parallel Theoretical Developments Theoretical Developments

Speaker

simon catterall

Description

It is well known that the action for General Relativity (GR) can be rewritten in terms of a tetrad field $e_\mu$ and a spin connection $\omega_\mu$ where the former
is loosely a square root of the metric and the latter is a gauge field
needed to ensure local Lorentz invariance. It is less well known that these
two can be combined into a single gauge field associated with local (anti)de Sitter
symmetry with the resultant gauge theory reducing to GR in a Higgs phase. In two
dimensional Euclidean space the model appears as a novel form of $SU(2)$ gauge theory which can be reformulated as a tensor network. We describe analytic and numerical results obtained for this theory and its extension to four dimensions.

Authors

simon catterall Dr Judah Unmuth-Yockey (Syracuse University) Mohammad Asaduzzaman (Syracuse University)

Presentation materials