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The smallest matrix black hole model in the classical limit
David Berenstein, Daisuke Kawai
We study the smallest non-trivial matrix model that can be considered to be a (toy) model of a black hole. The model consists of a pair of traceless hermitian matrices…
Logarithmic enhancements in conformal perturbation theory and their real time interpretation
David Berenstein, Alexandra Miller
We study various corrections of correlation functions to leading order in conformal perturbation theory, both on the cylinder and on the plane. Many problems on the cylinder are ma…
Topology and geometry cannot be measured by an operator measurement in quantum gravity
David Berenstein, Alexandra Miller
In the context of LLM geometries, we show that superpositions of classical coherent states of trivial topology can give rise to new classical limits where the topology of spacetime…
Reconstructing spacetime from the hologram, even in the classical limit, requires physics beyond the Planck scale
David Berenstein, Alexandra Miller
We argue in this essay that for classical configurations of gravity in the AdS/CFT setup, it is in general impossible to reconstruct the bulk geometry from the leading asymptotic b…