IGAP Geometry and Physics seminar 20/04

[Christian]

Hi everyone,

This is a reminder for today's IGAP webinar.

You can find all of the relevant info below.

Best,

Christian

On 4/15/21 5:44 PM, Christian wrote:
>
> Dear everyone,
>
> Next *Tuesday April 20th at 14:30* we resume the "Geometry and 
> Physics" webinar series. The next seminar will be
>
> Speaker: Daniele Dorigoni (Durham U.)
>
> Title: An exact integrated correlator in \mathcal{N} = 4 SU(N) SYM
>
> Abstract:
>
> Between all the magical properties of \mathcal{N} = 4 SU(N) super 
> Yang-Mills perhaps one of the most important is Montonen-Olive 
> electric-magnetic SL(2,Z) duality.
> In particular this leads to the constraint that observables must be 
> invariant under inversion of the complex YM coupling \tau, i.e. under 
> \tau -> -1 / \tau.
> In this talk we will focus on one such physical quantity, namely an 
> integrated correlator of four super-conformal primaries of the 
> stress-tensor multiplet.
> I will firstly review how this correlator can be computed via 
> supersymmetric localisation on S^4, and then discuss how this quantity 
> can be rewritten in a manifestly SL(2,Z) invariant way for any number 
> of colours N, and any value of the complex YM coupling \tau. Thanks to 
> this novel expression we can explore various different regimes: 
> perturbative SYM, large-N supergravity approximation, large-N 't Hooft 
> expansion. All of these regimes are connected via a remarkable 
> Laplace-difference equation relating the SU(N) to the SU(N+1) and 
> SU(N−1) correlators.
>
> The meeting will be on Zoom at the following coordinates:
>
> https://sissa-it.zoom.us/j/85422195215?pwd=YktPNVBsQWZNbW5HSXNOTDRWVUh6QT09 
> <https://sissa-it.zoom.us/j/85422195215?pwd=YktPNVBsQWZNbW5HSXNOTDRWVUh6QT09>
>
> <https://sissa-it.zoom.us/j/85656889691?pwd=dmJMMDAvZXpXSHRPRDVLWW5IUDBadz09>
>
>  or
>
> Meeting ID: 854 2219 5215
>
> Passcode: igapgeophy
>
> See you there,
>
> The Organizers (Francesco Benini, Giulio Bonelli, Christian Copetti, 
> Pavel Putrov and Alessandro Tanzini)
>