# Gravity from Averaging CFTs

Date:

09/28/2020 - 2:00pm

Speaker(s) / Presenter(s):

Alexander Maloney (McGill)

Abstract:

I will explore the idea that certain theories of gravity in Anti-de

Sitter space are dual to an average over an ensemble of quantum

theories, rather than to a specific quantum theory. I will describe

an average over Narain’s family of two-dimensional conformal field

theories which describe free bosons on a torus, and compute the

partition function using the Siegel-Weil formula. The result takes

the form of a sum over geometries as one would expect in a theory of

gravity. But the gravitational theory looks more like a Chern-Simons

theory than like Einstein gravity.

Zoom: https://uky.zoom.us/j/94475622713

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