Институт теоретической и математической физики

МГУ имени М.В. Ломоносова

ITMP Seminar "Bootstrapping the AdS Virasoro-Shapiro amplitude"

ITMP Seminar
10 октября 2023

Dear Colleagues,

We are pleased to announce that the next ITMP seminar will be held on Wednesday, Oct 11, 18:00 (Moscow time). It will be organised via Zoom.

Speaker: Dr. Tobias Hansen, University of Oxford

Title: Bootstrapping the AdS Virasoro-Shapiro amplitude

Abstract: I will present a constructive method to compute the Virasoro-Shapiro amplitude on AdS5xS5, order by order in AdS curvature corrections. A simple toy model for strings on AdS indicates that at order k the answer takes the form of a genus zero world-sheet integral involving single-valued multiple polylogarithms of weight 3k. The coefficients in an ansatz in terms of these functions are then fixed by Regge boundedness of the amplitude, which is imposed via a dispersion relation in the holographically dual CFT. We explicitly constructed the first two curvature corrections. Our final answer reproduces all CFT data available from integrability and all localisation results, to this order, and produces a wealth of new CFT data for planar N=4 SYM theory at strong coupling.

If you want to join the seminar please register here before 16:00, October 11 here.

If you would like to subscribe to newsletters about ITMP seminars, please, contact seminar@itmp.msu.ru



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