Spacetime Fluctuations in AdS/CFT

Abstract

We compute fluctuations in the modular energy of the vacuum associated with a Rindler-wedge in AdS spacetime in the context of AdS/CFT. We discuss the possible effect of these energy fluctuations on the spacetime geometry, and on the traversal time of a light beam propagating from the boundary to the bulk and back.

Comments: 25 pages, 1 figure. v2: Updated to reflect published version