Algebraic deformations arising from orbifolds with discrete torsion
K-Theory and Homology
2007-05-23 v2 High Energy Physics - Theory
Rings and Algebras
Abstract
We develop methods for computing Hochschild cohomology groups and deformations of crossed product rings. We use these methods to find deformations of a ring associated to a particular orbifold with discrete torsion, and give a presentation of the center of the resulting deformed ring. This connects with earlier calculations by Vafa and Witten of chiral numbers and deformations of a similar orbifold.
Cite
@article{arxiv.math/0210027,
title = {Algebraic deformations arising from orbifolds with discrete torsion},
author = {Andrei Caldararu and Anthony Giaquinto and Sarah Witherspoon},
journal= {arXiv preprint arXiv:math/0210027},
year = {2007}
}
Comments
19 pages, LaTeX2e; final version to appear in JPAA