Large N Phase Transitions and Small AdS-Schwarzschild Black Holes

Speaker: Sudip Ghosh

Abstract: We will discuss aspects of small AdS-Schwarzschild Black Holes in the context of the AdS/CFT correspondence. In particular we will consider issues related to dynamical instabilities of small black holes and their dual interpretation in the boundary gauge theory at large N. 

Title: Extended TQFT

Abstract: This talk is the continuation of my TQFT discussion from last week. I am going to discuss the extended TQFT as an open-closed strings following the nice paper by Aaron D. Lauda, Hendryk Pfeiffer  "Open-closed strings: Two-dimensional extended TQFTs and Frobenius algebras". After that I am going to discuss 2-categories approach and compare it with asymptotic symmetries and edge modes. 

QG group meeting.
Speaker: Yasha Neiman
Title: "Boundary locality vs. higher-spin symmetry"

Our new Deigo Cluster is coming! Learn all about the migration, and ask us any questions you may have.

Title: Strings from Massive Higher Spins: The Asymptotic Uniqueness of the Veneziano Amplitude

Abstract: We are going to discuss the recent paper by Simon Caron-Huot, Zohar Komargodski, Amit Sever and Alexander Zhiboedov  "Strings from Massive Higher Spins: The Asymptotic Uniqueness of the Veneziano Amplitude". Dorian Weissman will be leading the discussion. 

TQM unit is holding a Zoom seminar.

Title : TQFT and Asymptotic symmetries

Speaker: Vyacheslav  Lysov

Abstract: I will provide an introduction to topological quantum field theories (TQFT) and their generalization - Extended TQFT. Using the TQFT framework I am going to discuss the behaviour of Hilbert spaces, associated to the  boundary components, under the gluing. 

This session will represent an introduction to several more advanced topological topics that are important in different branches of mathematics and physics.

We will discuss algebraic properties of knot surgery diagrams that turn out to be useful tools to simplify the description of a three manifod.

We will focus this lecture on the concept of homology and its relation to the handle decomposition of manifolds.