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hep-th2022
Sigma Models and Geometry
Ulf Lindström
Supersymmetric nonlinear sigma models have target spaces that carry interesting geometry. The geometry is richer the more supersymmetries the model has. The study of models with tw…
hep-th2022★ 9 cited
Tensionless Strings and Killing(-Yano) Tensors
Ulf Lindström, Özgür Sarıoğlu
We construct invariants for bosonic and spinning tensionless (null) strings in backgrounds that carry Killing tensors or Killing-Yano tensors of mixed type. This is facilitated by…