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Discrete torsion and twisted orbifold cohomology

Yongbin Ruan
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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.

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Yongbin Ruan. 2000-12-21. Discrete torsion and twisted orbifold cohomology. https://arxiv.org/abs/math/0005299

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