Instanton corrected hypermultiplet moduli spaces from non-perturbative string dualities

by Frank Saueressig (Utrecht University)

Tuesday 18 Mar 2008, 14:00 → 15:00 Europe/Zurich

TH Theory Conference Room (CERN)

The lack of a nonperturbative formulation of string theory is its main shortcoming as a full-fledged theory of quantum gravity. In special cases, however, the symmetries and dualities of the theory are powerful enough to fix the exact couplings in the low-energy effective action. In this talk we will combine the off-shell description of hypermultiplets coupled to d=4, N=2 supergravity with various duality symmetries of type II strings to determine the D(-1), D(1) and D(2)-brane instanton corrections to the low energy effective actions arising from type II string compactifications on Calabi-Yau threefolds without fluxes.