Month: April 2020

On May 21 we will have a seminar by

Sakura Schafer-Nameki (University of Oxford)

Title: Symmetries in 5d SCFTs and Gauge Theories

Abstract:
I will summarize recent progress in construction and studies of 5d N=1 gauge theories and their UV fixed points, with a focus on characterizing their global symmetries, both in the field theory and in the M-theory realization on a non-compact Calabi-Yau threefold.

Meeting information:
21st of May at 14:30 Italian Time
Zoom Meeting https://zoom.us/j/198435430

Slides are available at
https://pandora.infn.it/public/fa094b

You can watch the recording at
https://pandora.infn.it/public/8250f0

On May 7 we will have a seminar by

Marcos Mariño (University of Geneva)

Title: Resurgence, WKB and strings

Abstract:
The WKB method has played a fundamental role in the development of quantum mechanics. In the 1980s and 1990s, and largely under the influence of Ecalle’s theory of resurgence, it was upgraded to the exact (or complex) WKB method. More recently, developments in supersymmetric gauge theory and string theory have provided a new perspective on this venerable subject. In this talk I will review the basic ingredients of the exact WKB method and present new results inspired by gauge theory/string theory. I will show in particular that the work of Gaiotto-Moore-Neitzke on BPS states provides an elegant solution of the exact WKB method as applied to arbitrary polynomial potentials. I will also discuss some open problems in the subject.

Meeting information:
7th of May at 14:30 Italian Time
Zoom Meeting https://zoom.us/j/198435430

Slides are available at
https://pandora.infn.it/public/e3a214

You can watch the recording at
https://pandora.infn.it/public/fd14c0

On April 30 we will have a seminar by

Juan Maldacena (IAS Princeton)

Title: The entropy of Hawking radiation and the information paradox

Abstract:
We will review recent progress on the black hole information paradox.
We start by reviewing some aspects of black hole thermodynamics.
Then we will introduce the formula for fine grained entropy of black holes. We apply it various examples. We then discuss how this formula computes the entropy of evaporating black holes as well as the entropy of Hawking radiation.

Meeting information:
30th of April at 16:30 Italian Time
Zoom Meeting https://zoom.us/j/198435430

Slides are available at
https://pandora.infn.it/public/2965e9

You can watch the recording at
https://pandora.infn.it/public/936a73