Speaker: Dr. Marco Aldi

Title: Vertex algebras, hyperbolic geometry and twisted T-duality.

Abstract: Lattice vertex algebras arise naturally in the quantization

of the sigma-model with target a torus. We explain how the quantization

of the sigma-model with target a (twisted) nilmanifold leads to a

generalization of lattice vertex algebras that are most conveniently described

in terms of hyperbolic geometry. This is joint work with R. Heluani.

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