3 papers
math.QA2020
Permutation orbifolds of Virasoro vertex algebras and -algebras
Antun Milas, Michael Penn, Christopher Sadowski
We study permutation orbifolds of the -fold and -fold tensor product for the Virasoro vertex algebra of central charge . In particular, we show that for al…
math.QA2016
Vertex-algebraic structure of principal subspaces of the basic modules for twisted Affine Kac-Moody Lie algebras of type
Michael Penn, Christopher Sadowski
We obtain a presentation of principal subspaces of basic modules for the twisted affine Kac-Moody Lie algebras of type , and . Using this pre…
math.QA2009
On a symmetry of the category of integrable modules
William J. Cook, Christopher Sadowski
Haisheng Li showed that given a module (W,Y_W(\cdot,x)) for a vertex algebra (V,Y(\cdot,x)), one can obtain a new V-module W^Δ = (W,Y_W(Δ(x)\cdot,x)) if Δ(x) satisfies certain natu…