Video Lectures

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...

We will discuss the existence of rational (multi)sections and unirulings for projective families f:X→CP1 with at most two singular fibres. In particular, we will discuss two ingredients that are used to construct the above algebraic curves. The...

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...

 The continuous min flow-max cut principle is used to reformulate the 'complexity=volume' conjecture using Lorentzian flows. Conceptually, discretized flows are interpreted in terms of `gatelines', one-dimensional time-like curves that connect...

 Although it is known that AdS/CFT as a quantum erasure correction code is only approximate, there is still much to learn about the precise bulk physical consequences of deviating from exact erasure correction codes. In this talk, I will take...

Computing the entropy of probability distributions and quantum states is a fundamental task in information processing. In this talk I'll discuss recent work with Matty Hoban (arXiv:2002.12814) in which we show that estimating the entropy of quantum...

The spread of a matrix is defined as the diameter of its spectrum. This quantity has been well-studied for general matrices and has recently grown in popularity for the specific case of the adjacency matrix of a graph. Most notably, Gregory...

The ABNNR encoding is a classical encoding scheme that amplifies the distance of an error correcting code. The encoding takes an error correcting code with a small distance and constructs an error correcting code with distance approaching one, by...