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 …

A bstract The information paradox can be realized in anti-de Sitter spacetime joined to a
Minkowski region. In this setting, we show that the large discrepancy between the von …

A bstract In the 1980's, work by Coleman and by Giddings and Strominger linked the physics
of spacetime wormholes to 'baby universes' and an ensemble of theories. We revisit such …

A bstract We reformulate recent insights into black hole information in a manner
emphasizing operationally-defined notions of entropy, Lorentz-signature descriptions, and …

A bstract After averaging over fermion couplings, SYK has a collective field description that
sometimes has “wormhole” solutions. We study the fate of these wormholes when the …

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 …

We consider toy models of holography arising from 3d Chern-Simons theory. In this context
a duality to an ensemble average over 2d CFTs has been recently proposed. We put forward …

A bstract We study two-dimensional Liouville gravity and minimal string theory on spaces
with fixed length boundaries. We find explicit formulas describing the gravitational dressing …

A bstract In this paper, we use the Karch-Randall braneworld to study theories of quantum
gravity in two dimensional (nearly) anti-de Sitter space (AdS 2). We focus on effective …