Discrete torsion and twisted orbifold cohomology
Algebraic Geometry
2007-05-23 v2 High Energy Physics - Theory
Differential Geometry
Symplectic Geometry
Abstract
In this article, we study the twisting procedure of orbifold cohomology. We introduce local system and construct twisted orbifold cohomology. Then, we generalize Vafa-Witten's notion of discrete torsion to general orbifold and examine its relation to local system. Finally, some examples are computed.
Cite
@article{arxiv.math/0005299,
title = {Discrete torsion and twisted orbifold cohomology},
author = {Yongbin Ruan},
journal= {arXiv preprint arXiv:math/0005299},
year = {2007}
}
Comments
Revised version