Video Lectures

In this talk I will discuss models of two-dimensional gravity that resolve the factorization puzzle and have a discrete spectrum, whilst retaining a semiclassical description. A novelty of these models is that they contain non-trivially correlated...

We present our studies on the late-time von Neumann entropy and its transition in Brownian SYK models. Without measurement, we show that the correlations between different replicas account for the Page curve at late time, and a permutation group...

The branching time in SYK-like models is defined as the average time separation of rungs when computing the out-of-time-order correlator. We argue that a parametrically large branching time is necessary to obtain holographic models with non-trivial...

Recently, a new quantum information measure called pseudo entropy was introduced as a generalization of entanglement entropy to quantify quantum correlation between initial and final states in a time-dependent system. In this talk, I will examine...

Abstract 1: Despite the success of LCDM model, there is a growing tension between measurements of the current expansion rate from the local distance ladder and from the cosmic microwave background (CMB). Known as the $H_0$ tension, this...

The connections between disordered quantum systems (specifically the SYK model), ensemble averaging, and two-dimensional dilaton gravity underlie much of the recent progress on holography and quantum gravity. I will discuss simple disordered systems...