Seminar
Speaker
Ashoke Sen (Harish-Chandra Research Institute, Allahabad)
Date & Time
Wed, 10 February 2021, 15:00 to 16:30
Venue
ICTS virtual seminar
Abstract

D-instantons give non-perturbative contribution to string theory amplitudes which can be computed using world-sheet techniques. However the integrals that appear in this computation often have divergences from corners of the moduli spaces which cannot be tamed by the usual procedureof analytic continuation. We show how using insights from string field theory we can extract finite unambiguous results from these apparently divergent integrals.