A deRham model for Chen-Ruan cohomology ring of abelian orbifolds
Symplectic Geometry
2007-05-23 v3 Differential Geometry
Abstract
We present a deRham model for Chen-Ruan cohomology ring of abelian orbifolds. We introduce the notion of \emph{twist factors} so that formally the stringy cohomology ring can be defined without going through pseudo-holomorphic orbifold curves. Thus our model can be viewed as the classical description of Chen-Ruan cohomology for abelian orbifolds. The model simplifies computation of Chen-Ruan cohomology ring. Using our model, we give a version of wall crossing formula.
Keywords
Cite
@article{arxiv.math/0408265,
title = {A deRham model for Chen-Ruan cohomology ring of abelian orbifolds},
author = {Bohui Chen and Shengda Hu},
journal= {arXiv preprint arXiv:math/0408265},
year = {2007}
}
Comments
14 pages, corrected typos, added more references and shifted to presentation using groupoid