Abstract The Sachdev–Ye–Kitaev (SYK) model is a strongly coupled, quantum many-body
system that is chaotic, nearly conformally invariant, and exactly solvable. This remarkable …

We define and calculate versions of complexity for free fermionic quantum field theories in
1+ 1 and 3+ 1 dimensions, adopting Nielsen's geodesic perspective in the space of circuits …

A bstract We analyse the dynamics of near-extremal Reissner-Nordström black holes in
asymptotically four-dimensional Anti de Sitter space (AdS 4). We work in the spherically …

A bstract We study the behaviour of extremal and near-extremal black holes at low energies
and low temperatures and find that it can be understood from the near-horizon AdS 2 region …

A bstract We discuss conditions under which a deterministic sequence of real numbers,
interpreted as the set of eigenvalues of a Hamiltonian, can exhibit features usually …

A bstract We consider the question of identifying the bulk space-time of the SYK model.
Focusing on the signature of emergent space-time of the (Euclidean) model, we explain the …

A bstract Black holes are believed to have the fast scrambling properties of random matrices.
If the fuzzball proposal is to be a viable model for quantum black holes, it should reproduce …

A bstract We consider a black hole with a stretched horizon as a toy model for a fuzzball
microstate. The stretched horizon provides a cut-off, and therefore one can determine the …

A bstract In this article, building on our recent investigations and motivated by the fuzzball-
paradigm, we explore normal modes of a probe massless scalar field in the rotating BTZ …

We review the fast developing subject of tensor models for the NAdS $ _2 $/NCFT $ _1 $
holographic correspondence. We include a brief review of the Sachdev-Ye-Kitaev (SYK) …