Les livres de l'auteur brian williams

The curved ßy system is a nonlinear o-model with a Riemann surface as the source and a complex manifold X as the target. Its classical solutions pick out the holomorphic maps from the Riemann surface into X. Physical arguments identify its algebra of operators with a vertex algebra known as the chiral differential operators (CDO) of X.
[lire la quatrième du livre Chiral differential operators via quantization of [...]]