“Bulletin Board”

 School of Particles and Accelerator - October 24, 2012

Weekly Seminar on Stringy instanton effects in N=2 super Yang-Mills theory

Hossein Ghorbani


Abstract: We will introduce the instanton solutions in the gauge theories and find a realization of them in string theory by building a model of D-branes and D-instantons in type IIB. We explain then how a new type of instantons called "exotic" or "stringy" instantons emerges from string theory. Stringy instantons correct the low-energy effective action but do not directly appear in the gauge field theories. We calculate the effect of multi-stringy-instantons in the prepotential of the N=2 super Yang-Mills with gauge group SU(2) and its generalization to SU(N)

Time: Wednesday, October 24, 2012 at 15:00 in Larak
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