Description
Hypertoric varieties are known as an example of conical symplectic singularities
and their resolutions. Using BRST reduction, we construct a sheaf of (h-adic)
vertex algebras over a family of Poisson deformations of a hypertoric variety.
A conformal vector is constructed explicitly, and we obtain a vertex operator
algebra as a vertex algebra of global sections.
As certain special cases, the construction gives localization of affine W-algebras
of subregular type A of level -N+1, and one of simple affine VOA of type A of level -1.
