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 …

The appearance of the Planckian time τ Pl= ℏ/k BT is reviewed in both conventional and
unconventional metals. A pedagogical discussion of the various different timescales …

This tutorial article introduces the physics of quantum information scrambling in quantum
many-body systems. The goals are to understand how to precisely quantify the spreading of …

A bstract We show that holographic thermal two-sided two-point correlators take the form of
a product over quasi-normal modes (QNMs). Due to this fact, the two-point function admits a …

A bstract Quasinormal modes and frequencies are the eigenvectors and eigenvalues of a
non-Hermitian differential operator. They hold crucial significance in the physics of black …

A bstract We rewrite the Chern-Simons description of pure gravity on global AdS 3 and on
Euclidean BTZ black holes as a quantum field theory on the AdS boundary. The resulting …

A bstract Recent developments have indicated that in addition to out-of-time ordered
correlation functions (OTOCs), quantum chaos also has a sharp manifestation in the thermal …

A bstract We study analytic properties of the dispersion relations in classical hydrody-namics
by treating them as Puiseux series in complex momentum. The radii of convergence of the …

This is a complete and exhaustive review on the so-called holographic axion model—a
bottom-up holographic system characterized by the presence of a set of shift symmetric …

A bstract We develop a method to study coupled dynamics of gauge-invariant variables,
constructed out of metric and gauge field fluctuations on the background of a AdS 5 …