A deRham model for Chen-Ruan cohomology ring of Abelian orbifolds
- First Online:
- Cite this article as:
- Chen, B. & Hu, S. Math. Ann. (2006) 336: 51. doi:10.1007/s00208-006-0774-3
We present a deRham model for Chen-Ruan cohomology ring of abelian orbifolds. We introduce the notion of 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.