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18 papers · 2 filters
Poisson-Lie T-Duality and Supersymmetry
Konstadinos Sfetsos
We review aspects of Poisson-Lie T-duality which we explicitly formulate as a canonical transformation on the world-sheet. Extensions of previous work on T-duality in relation to s…
Classical and quantum N=2 supersymmetric black holes
K. Behrndt, G. Lopes Cardoso, B. de Wit +3
We use heterotic/type-II prepotentials to study quantum/classical black holes with half the supersymmetries unbroken. We show that, in the case of heterotic string compa…
Duality and Canonical Transformations
Y. Lozano
We present a brief review on the canonical transformation description of some duality symmetries in string and gauge theories. In particular, we consider abelian and non-abelian T-…
Coset Models and Differential Geometry
Konstadinos Sfetsos
String propagation on a curved background defines an embedding problem of surfaces in differential geometry. Using this, we show that in a wide class of backgrounds the classical d…
Elliptic Genera of Symmetric Products and Second Quantized Strings
R. Dijkgraaf, G. Moore, E. Verlinde +1
In this note we prove an identity that equates the elliptic genus partition function of a supersymmetric sigma model on the N-fold symmetric product of a manifold M to th…
Killing-Yano Supersymmetry in String Theory
F. De Jonghe, K. Peeters, K. Sfetsos
The presence of Killing-Yano tensors implies the existence of non-standard supersymmetries in point particle theories on curved backgrounds. In a string theoretical context these a…