Seminar March 26: M. Taronna

On March 26 we will have a seminar by

Massimo Taronna (Napoli U.)

Title: Bootstrapping (A)dS exchanges

Abstract:
Gravitational observables are inherently holographic in nature. When the asymptotic boundary of space time admits a canonical definition of time this allows to use standard principles of Quantum Mechanics to describe such observables. On the other hand the situation is not clear otherwise. This is the case in dS space where the boundary is space-like. Nonetheless bulk causality must be imprinted at the boundary in some way. In this talk I will discuss how to bootstrap tree level amplitudes both in AdS and dS. I will fix from first principles the form of such holographic observables discussing their singularities. In AdS I will also discuss how the knowledge of exchange amplitudes alone allows to derive non-perturbative constraints on CFT correlators writing down extremal functionals for the CFT bootstrap in arbitrary dimensions

Meeting information:
26th of March at 14:30
Zoom Meeting https://zoom.us/j/198435430

Slides are available at
https://pandora.infn.it/public/377a24

You can watch the recording at
https://pandora.infn.it/public/69ae67

Seminars March 19: D. Orlando, A. Sfondrini

On March 19th we will launch the seminar series with a double feature:

Domenico Orlando (INFN Torino)
Introduction to the large charge expansion

Alessandro Sfondrini (Padova University)
Generalised T-Tbar flow equations from scattering factorisation

The meeting will start at 14.30 Italian time.

Slides are available at
https://pandora.infn.it/public/9f8e5f
https://pandora.infn.it/public/d1f459

Web seminars launch and calendar

In view of the ongoing Coronavirus pandemic we have decided to start an on-line series to continue our scientific exchange in spite of the adversities.

Ordinarily seminar will take place on Thursdays at 14:30 Italian time.

The seminars are organised through Zoom meetings, and it is possible to join through the link
https://l.infn.it/stringwebseminar
(Meeting ID: 198 435 430 )

You can subscribe to our (Google) calendar using this link:
https://bit.ly/2y5NzNZ

Alessandro and Domenico