HET Seminar |Lorenz Eberhardt, Member, School of Natural Sciences, IAS| “Evaluating one-loop string amplitudes” | PCTS & Zoom

May 12, 2023, 1:45 pm1:45 pm
PCTS & Zoom


Event Description

 I will explain recent work with S. Mizera in which we give explicit evaluations of one-loop open string amplitudes at finite alpha’. Our method involves various deformations of the contour integral over the modular parameter. We directly verify that the one-loop string amplitude satisfies unitarity constraints. I will show plots of the amplitude which allows us to explore physical conjectures about their behavior, especially at high energies.