Speakers: Yann Boucher (École Nationale d'Ingénieurs de Brest)Ces dernières décennies, la redécouverte des opérateurs Hamiltoniens non-hermitiques, et des systèmes quantiques présentant une "Symétrie Parité-Temps", a suscité de nombreux travaux. La transposition à

I plan to discuss how Q-operators for rational spin chains can be constructed in the framework of the quantum inverse scattering method. The presentation will include open and closed XXX type spin

Speakers: Taro Kimura (Keio University)Recently we have established a gauge theoretic construction of W-algebras, that we call the quiver W-algebras. In this construction, we obtain the q-deformed W-algebra associated with the quiver

I will talk about a recent work in which we find an explicit formula for each Seeley-deWitt coefficient in the full heat kernel expansion of the Dirac-Laplacian of the Robertson-Walker metric with

Dmytro Volin will give 5 mini-courses about "Young tableaux and quantum integrability", with the following a priori schedule: Lecture 1 (march 26): Multiplication of Young tableaux through “Jeu de taquin”. Plactic monoid.

Résumé : Nous allons considérer des matrices de Toeplitz avec un nombre fini des bandes. Je vais présenter quelques résultats récentes concernant la distribution de leurs valeurs propres après petite perturbation aléatoire.

Dmytro Volin will give 5 mini-courses about "Young tableaux and quantum integrability", with the following a priori schedule: Lecture 1 (march 26): Multiplication of Young tableaux through “Jeu de taquin”. Plactic monoid.

Dmytro Volin will give 5 mini-courses about "Young tableaux and quantum integrability", with the following a priori schedule: Lecture 1 (march 26): Multiplication of Young tableaux through “Jeu de taquin”. Plactic monoid.

Dmytro Volin will give 5 mini-courses about "Young tableaux and quantum integrability", with the following a priori schedule: Lecture 1 (march 26): Multiplication of Young tableaux through “Jeu de taquin”. Plactic monoid.

Dmytro Volin will give 5 mini-courses about "Young tableaux and quantum integrability", with the following a priori schedule: Lecture 1 (march 26): Multiplication of Young tableaux through “Jeu de taquin”. Plactic monoid.

Speakers: Michael Hitrik (UCLA)We establish a large time expansion for the propagator associated to a semiclassical non-selfadjoint magnetic Schrödinger operator, in terms of the corresponding low lying eigenvalues.This is joint work with Ben Bellis.https://indico.math.cnrs.fr/event/4350/

Speakers: Badri Krishnan (Max-Planck Institut for Gravitational Physics (AEI))In this talk I will present a new way of visualizing and studying a binary black hole coalescence.  Instead of employing global event horizons, this

https://indico.math.cnrs.fr/event/5300/

Speakers: Sylvain Ribault (IPhT, Saclay)I will review the basic principles of two-dimensional conformal field theory, and some important results. First I will explain the origin and consequences of the existence of a

Speakers: Sylvain Ribault (IPhT, Saclay)I will describe the limit of D-series minimal models when the central charge tends to a generic irrational value c<1. I will show that the limit theory's three-point

Speakers: Mikhail Isachenkov (IHES)Conformal bootstrap programme in the spacetime dimensions d>2 has seen a revival in the last decade. I will describe a direct connection between the important constituents of the bootstrap

Speakers: Honda Masazumi (University of Cambridge)I will talk about supersymmetric index of 4d N=1 supersymmetric theories on S^1xM_3 which counts supersymmetric states.  In the first part, I will discuss a general formula

Speakers: Ali Zahabi (Université de Bourgogne)First, we review the BPS sector in N = 2, four-dimensional toric quiver gauge theories and its relation to crystal melting model and dimer model. Then, we

Speakers: Yutaka Shikano (Keio University)A cloud quantum computer is similar to a random number generator in that its physical mechanism is inaccessible to the users. In this respect, a cloud quantum computer

Speakers: Stefan Hohenegger (Université Claude Bernard Lyon 1)In this talk, I discuss so-called Little String Theories (LSTs), which are a type of interacting quantum theories whose UV-completion contains string-like (i.e. extended) degrees

Speakers: Georgy Sharygin (ITEP, Moscow State University)The full symmetric Toda system is a straightforward generalization of the usual (3-diagonal) system; it can be further generalized to the case of Cartan decomposition of

Speakers: Nicolas Besset (Institut Fourier, Université Grenoble Alpes)We consider the charged Klein-Gordon equation outside the De Sitter-Reissner-Nordström black hole. The product of the charge of the field and the charge of the

Speakers: Juan Valiente-Kroon (Queen Mary University of London)In this talk I will reconsider the problem of comparing initial data to a reference solution for the vacuum Einstein field equations is considered. To

Speakers: Atsuo Kuniba (University of Tokyo)Box-ball system (BBS) is a distinguished example ofsoliton cellular automaton in one dimension.Its integrability has been studied extensively from the viewpoint ofquantum groups, Bethe ansatz, ultradiscretization and

Speakers: Alexander Alexandrov (IBS Center for Geometry and Physics, POSTECH)https://indico.math.cnrs.fr/event/5678/

Speakers: Robin Tucker (Lancaster University)https://indico.math.cnrs.fr/event/5643/

Speakers: Frédéric Hélein (Université de Paris)https://indico.math.cnrs.fr/event/6106/

We provide a necessary and sufficient condition for the uniqueness of penalized least-squares estimators whose penalty term is given by a norm with a polytope unit ball, covering a wide range of

In this talk we explore the issue of black hole quasi-normal mode (QNM) instability. Specifically, by adopting a hyperboloidal approach to QNMswe cast the QNM problem as an eigenvalue problem for a non-selfadjointoperator.

Speakers: Geneviève Dusson (Université de Franche-Comté)In this talk, I will present and analyse a method to solve self-adjoint eigenvalue problems. This method is based on the Feshbach-Schur map (i.e. a Schur complement)

https://indico.math.cnrs.fr/event/6124/

Fusion categories arise in the study of conformal field theory While Rep(G) for G a finite group is the primary example of a fusion category, categories which are Morita equivalent to Rep

Speakers: Amir-Kian Kashani-Poor (École normale supérieure)In this talk, we will give a leisurely introduction to the topological string, emphasizing its multi-faceted nature inherited from its parent theory, string theory. As a concrete

The quantum differential equation (qDE) is a rich object attached to a smooth projective variety X. It is an ordinary differential equation in the complex domain which encodes information of the enumerative

La DFT (density functional theory) est la méthode la plus efficace pour modéliser la matière à l'échelle microscopique, elle est extensivement utilisée en physique et chimie quantique à N corps. Elle peut

https://www.mathconf.org/qddijon2021https://indico.math.cnrs.fr/event/6528/

La compréhension de la cohomologie des espaces des modules des courbes est un problème de longue date en géométrie algébrique. Ce qui est surprenant, c'est le degré de motivation que ce problème

 After refreshing the well-known works by Mulase, Reyman and Semenov-Tian-Shanski on the algebraic integration of the Kadomtsev-Petviashvili (KP) hierarchy via r-matrices, we show in this talk:- firstly how the classical algebra of 

In this work we investigate propagation of smallness properties for solutions to heat equations. We consider spectral projector estimates for the Laplace operator with Dirichlet or Neumann boundary conditions on a Riemanian