Spring 2023 Schedule

Monday
Swampland Seminar: 11:00am - 12:00pm ET, bi-weekly

Tuesday
Member Seminar: 12:00pm - 1:00pm ET

Wednesday
Colloquium: 12:30pm - 1:30pm ET
New Technologies in Mathematics Seminar: 2:00pm - 3:00pm ET
Probability Seminar: 3:30pm - 4:30pm ET

Thursday
General Relativity Seminar: 9:30am - 10:30am ET
Active Matter Seminar: 1:00pm - 2:00pm ET, bi-weekly

Friday
Algebraic Geometry in String Theory Seminar: 9:00am - 10:00am ET
Quantum Matter in Mathematics and Physics Seminar: 10:00am - 11:30am ET


  • Friday, June 9, 2023
  • 10:00 AM
Category: Quantum Matter
Speaker: Gerald Höhn (Kansas State University) & Sven Möller (University of Hamburg)
Title: Classification of Self-Dual Vertex Operator Superalgebras of Central Charge at Most
Quantum Matter Seminar Speakers: Gerald Höhn (Kansas State University) & Sven Möller (University of Hamburg) Title: Classification of Self-Dual Vertex Operator Superalgebras of Central Charge at Most 24 Abstract: We discuss the classfication of self-dual vertex operator superalgebras (SVOAs) of central charge 24, or in physics parlance the purely chiral 2-dimensional fermionic conformal field theories with just one primary field. There are exactly 969 such SVOAs under suitable regularity assumptions and the assumption that the shorter moonshine module VB^# is the unique self-dual SVOA of central charge 23.5 whose weight-1/2 and weight-1 spaces vanish. We construct and classify the self-dual SVOAs by determining the 2-neighbourhood graph of the self-dual (purely bosonic) VOAs of central charge 24 and also...
  • Tuesday, June 13, 2023
  • 10:00 AM
Category: Quantum Matter
Speaker: Brandon C. Rayhaun, Stony Brook University
Title: Small Bosonic CFTs, Chiral Fermionization, and SymmetrySubalgebra Duality
Quantum Matter Seminar Speaker: Brandon C. Rayhaun (C. N. Yang ITP, Stony Brook University) Title: Small Bosonic CFTs, Chiral Fermionization, and Symmetry/Subalgebra Duality Abstract: Conformal field theories in (1+1)D are key actors in many dramas of physics and mathematics. Their classification has therefore been an important and long-standing problem. In this talk, I will explain the main ideas behind the classification of (most) “small” bosonic CFTs. Here, I use the adjective “small” informally to refer to theories with low central charge (less than 24) and few primary operators (less than 5). Time and attention permitting, I will highlight two applications of this result. First, I will describe how it can be used in tandem with bosonization and fermionization techniques...
  • Wednesday, July 5, 2023
  • 02:00 PM
Category: General Relativity Seminar
Speaker: Suman Kundu, Weizmann Institute
Title: ‘Grey Galaxy’ as the endpoint of the Kerr-AdS super radiant blackhole
General Relativity Seminar Speaker: Suman Kundu (Weizmann Institute) Title: ‘Grey Galaxy’ as the endpoint of the Kerr-AdS super radiant blackhole Abstract: Kerr AdS$_{d+1}$ black holes for $d\geq 3$ suffer from classical superradiant instabilities over a range of masses near extremality. We conjecture that these instabilities settle down into Grey Galaxies (GG)s - a new class of solutions to Einstein's equations which we construct for $d=3$. Grey Galaxies consist of an $\omega=1$ black hole in the `centre' of $AdS$, surrounded by a uniformly thick and very large disk of thermal bulk matter that revolves around the centre of AdS at the speed of light. The parametrically low energy density and parametrically large radius of the gas disk are inversely related;...