Supersymmetry and dualities

Supersymmetry and Dualities ∗

Duality transformations with respect to rotational isometries relate supersymmetric with non-supersymmetric backgrounds in string theory. We find that non-local world-sheet effects have to be taken into account in order to restore supersymmetry at the string level. The underlying superconformal algebra remains the same, but in this case T-duality relates local with non-local realizations of the...

Supersymmetry and Dualities in Various Dimensions 1

Supersymmetry breaking at the end of a cascade of Seiberg dualities

We study the IR dynamics of the cascading non-conformal quiver theory on N regular and M fractional D3 branes at the tip of the complex cone over the first del Pezzo surface. The horizon of this cone is the irregular Sasaki-Einstein manifold Y 2,1. Our analysis shows that at the end of the cascade supersymmetry is dynamically broken.

Dualities and fivebrane instantons

We derive the fivebrane instanton corrections to the hypermultiplet moduli space MH of Calabi-Yau string vacua using S-duality symmetry of the type IIB formulation. The result is given in terms of a set of holomorphic functions on the twistor space of MH . It contains not only all orders of the instanton expansion, but also takes into account the presence of D1-D(-1)-brane instantons. Furthermo...

Dualities and intertheoretic relations

The idea of duality is at the core of the most relevant developments in recent fundamental physics. During the last forty years theoretical physics has used the notion of duality in different ways and frameworks: in the so-called dual resonance model of the late sixties, which gave birth to early string theory; in the context of quantum field theory, where a groundbreaking generalization of ele...