BEL lectures by Axel Kleinschmidt

On the 1st of February 2023, the Service de Physique de l’Univers, Champs et Gravitation of UMONS will host two of the three Brout–Englert–Lemaître (BEL) lectures of Dr. Axel Kleinschmidt, Senior Scientist at the Max Planck Institute for Gravitational Physics (Albert Einstein Institute) in Germany, who will be an Eminent Visitor at the BEL center (https://www.bel-center.be) this semester.

The schedule for the day is the following:

10h30 – 11h30, Lecture I: String scattering old and new I

I will review some of the basic foundations of string scattering amplitudes, including CFT techniques, Riemann surfaces and leading to the Veneziano and Virasoro-Shapiro amplitudes.

11h30 – 12h00: Coffee break

12h00 – 13h00, Lecture II: String scattering old and new II

In this lecture, I will mention KLT relations at tree level and broaden the view to study general properties of the amplitudes and some of their deeper structure in relation to modular forms.

13h00 – 14h00: Lunch