We review recent developments in Jackiw–Teitelboim gravity. This is a simple solvable
model of quantum gravity in two dimensions (that arises eg from the s-wave sector of higher …

We generalize the recently discovered relationship between JT gravity and double-scaled
random matrix theory to the case that the boundary theory may have time-reversal symmetry …

A bstract We propose that a class of new topologies, for which there is no classical solution,
should be included in the path integral of three-dimensional pure gravity, and that their …

The double-scaled limit of the Sachdev-Ye-Kitaev (SYK) model takes the number of fermions
and their interaction number to infinity in a coordinated way. In this limit, two entangled …

We review recent progress regarding the double scaled Sachdev-Ye-Kitaev model and
other p-local quantum mechanical random Hamiltonians. These models exhibit an …

A bstract We study some aspects of the de Sitter version of Jackiw-Teitelboim gravity.
Though we do not have propagating gravitons, we have a boundary mode when we …

Quantum black holes are described by a large number of macroscopically indistinguishable
microstates. Correlation functions of fields outside the horizon at long time separation probe …

A bstract Understanding the fate of semi-classical black hole solutions at very late times is
one of the most important open questions in quantum gravity. In this paper, we provide a …

A bstract We find models of two dimensional gravity that resolve the factorization puzzle and
have a discrete spectrum, whilst retaining a semiclassical description. A novelty of these …

A bstract An important open question in black hole thermodynamics is about the existence of
a “mass gap” between an extremal black hole and the lightest near-extremal state within a …