Le 1er Février 2023, le Service de Physique de l’Univers, Champs et Gravitation de l’UMONS accueillera deux des trois cours Brout–Englert–Lemaître (BEL) du Dr. Axel Kleinschmidt, chercheur permanent au Max Planck Institute for Gravitational Physics (Albert Einstein Institute) en Allemagne, qui sera un des eminent visitors du centre BEL (https://www.bel-center.be) ce semestre.

Cette journée s’organisera de la manière suivante:

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