A smash product construction of nonlocal vertex algebras
arXiv:math/0511344
Abstract
A notion of vertex bialgebra and a notion of module nonlocal vertex algebra for a vertex bialgebra are studied and then a smash product construction of nonlocal vertex algebras is presented. For every nonlocal vertex algebra satisfying a suitable condition, a canonical bialgebra is constructed such that primitive elements of are essentially pseudo derivations and group-like elements are essentially pseudo endomorphisms. Furthermore, vertex algebras associated with Heisenberg Lie algebras as well as those associated with nondegenerate even lattices are reconstructed through smash products.
30 pages