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Old and new results for BPS amplitudes in string theory

Carlo Angelantonj (Turin)

13.02.2014 at 16:15 

I shall reconsider BPS-saturated amplitudes in heterotic string theory by using our recently proposed method for computing modular integrals. I shall show how these amplitudes can be naturally expressed in terms of generalised holomorphic prepotentials whose (inhomogeneous) modular properties are now completely under control and calculable. I shall finally apply our techniques to vacua with spontaneous partial supersymmetry breaking, and will present new results for gauge and gravitational thresholds and discuss new Borcherd's product formulae.

Arnold Sommerfeld Center
Theresienstrasse 37
Room 348/349