Recent years have witnessed a rise in interest in the geometrical trinity of General Relativity
and its extensions. This interest has been fuelled by novel insights into the nature of gravity …

This is a review of the Sachdev-Ye-Kitaev (SYK) model of compressible quantum many-
body systems without quasiparticle excitations, and its connections to various theoretical …

In this review we present a thoroughly comprehensive survey of recent work on modified
theories of gravity and their cosmological consequences. Amongst other things, we cover …

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 …

Recently, it has been proposed by Maldacena that large $ N $ limits of certain conformal
field theories in $ d $ dimensions can be described in terms of supergravity (and string …

We review the holographic correspondence between field theories and string/M theory,
focusing on the relation between compactifications of string/M theory on Anti-de Sitter …

Abstract The standard Einstein-Maxwell equations in 2+ 1 spacetime dimensions, with a
negative cosmological constant, admit a black hole solution. The 2+ 1 black hole …

Modified gravity theories have received increased attention lately due to combined
motivation coming from high-energy physics, cosmology, and astrophysics. Among …

The correspondence between supergravity (and string theory) on $ AdS $ space and
boundary conformal field theory relates the thermodynamics of ${\cal N}= 4$ super Yang …

The Einstein equations with a negative cosmological constant admit black hole solutions
which are asymptotic to anti-de Sitter space. Like black holes in asymptotically flat space …