Séminaire de Physique Théorique

String amplitudes of type IIA,IIB string theory with their α’ corrections

by Prof. Ehsan HATEFI (Queen Mary University of London and Witwatersrand University & IHÉS)

Amhithéâtre Léon Motchane (IHES)

Amhithéâtre Léon Motchane


IHES Le Bois Marie 35, route de Chartres 91440 Bures-sur-Yvette
We would like to make various remarks on string amplitudes in type II string theory in which getting the exact and final form of the world sheet integrals up to five point mixed closed-open amplitudes to all orders are given. We are also going to to talk about all kinds of effective actions involving DBI, Chern-Simons and more importantly new Wess Zumino actions. Indeed we try to provide a comprehensive explanation even for D-brane-anti D-brane systems. We also introduce various new techniques to be able to derive all order α’ corrections to all type II super string effective actions. If time allows, we then mention several issues related to those effective actions as well.
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