Physics

We compute the local second variation of the von Neumann entropy of a region in theories with a gravity dual. For null variations our formula says that the diagonal part of the Quantum Null Energy Condition is saturated in every state, thus...

We study the quantum mechanics of 3-index Majorana fermions $\psi^abc$ governed by a quartic Hamiltonian with $O(N)^3$ symmetry. Similarly to the Sachdev-Ye-Kitaev model, this tensor model has a solvable large N limit dominated by the melonic...

I will give introduction to general integrability-based methods to study two-dimensional quantum field theories. The goal (which I don't think I will achieve) is to explain how to compute the boundary entropy (also known as "g-function"), which...

I will present a status report for the study of confining strings. First, I will focus on confining strings in massive adjoint two-dimensional QCD, where analytical progress is most straightforward to achieve. Then I will describe lessons learnt...

I will show how the $T\bar T$ deformation of a two-dimensional QFT is related to coupling this QFT to a certain gravitational theory. This theory provides a natural set of clocks and rods which allow to define and compute the partition function on a...

I will review the averaged null energy condition, the Markov property and the quantum null energy condition in quantum field theory from an information-theoretic point of view. I will give some explicit examples from finite quantum systems and free...

I will discuss particle physics phenomenology from the point of view of statistical inference.
I will describe how the concept of information geometry can be used to equip the parameter space of a theory with a metric.
The central object in this...

In a TQFT of homological type, such as arises from the topological twist of a supersymmetric theory, it is well known that the local operators form an algebra, associative in dimension d >= 1 and commutative in d >= 2. The product comes from...

It is recently recognized that the global symmetry of a theory can be a nontrivial mixture of 0-form and 1-form global symmetries, called 2-group symmetry. A place where 2-group symmetry ubiquitously exists is 6d N=(1,0) little string theories. In...