25 citations · 26 across the 2 of their papers we have counts for
4 papers · 1 filter
Tensionless Strings and Supersymmetric Sigma Models: Aspects of the Target Space Geometry
Andreas Bredthauer
In this thesis, two aspects of string theory are discussed, tensionless strings and supersymmetric sigma models. The equivalent to a massless particle in string theory is a tension…
Generalized Hyperkaehler Geometry and Supersymmetry
Andreas Bredthauer
We propose the definition of (twisted) generalized hyperkaehler geometry and its relation to supersymmetric non-linear sigma models. We also construct the corresponding twistor spa…
First-order supersymmetric sigma models and target space geometry
Andreas Bredthauer, Ulf Lindstrom, Jonas Persson
We study the conditions under which N=(1,1) generalized sigma models support an extension to N=(2,2). The enhanced supersymmetry is related to the target space complex geometry. Co…
Type IIB tensionless superstrings in a pp-wave background
Andreas Bredthauer, Ulf Lindstrom, Jonas Persson +1
We solve the tensionless string in a constant plane wave background and obtain a hugely degenerate spectrum. This is the case for a large class of plane wave backgrounds. We show t…