Journal
DUKE MATHEMATICAL JOURNAL
Volume 147, Issue 3, Pages 377-438Publisher
DUKE UNIV PRESS
DOI: 10.1215/00127094-2009-015
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Funding
- Royal Society and by National Science Foundation [DMS-0401275]
- Kyushu University
- Engineering and Physical Science Research Council (UK) [EP/E022162/1]
- [18-15108]
- Engineering and Physical Sciences Research Council [EP/E022162/1] Funding Source: researchfish
- EPSRC [EP/E022162/1] Funding Source: UKRI
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Twisted Gromov-Witten invariants are intersection numbers in moduli spaces of stable maps to a manifold or orbifold X which depend in addition on a vector bundle over X and an invertible multiplicative characteristic class. Special cases are closely related to local Gromov-Witten invariants of the bundle and to genus-zero one-point invariants of complete intersections in X. We develop tools for computing genus-zero twisted Gromov-Witten invariants of orbifolds and apply them to several examples. We prove a quantum Lefschetz theorem that expresses genus-zero one-point Gromov-Witten invariants of a complete intersection in terms of those of the ambient orbifold X. We determine the genus-zero Gromov-Witten potential of the type A surface singularity [(C-2/Z(n)]. We also compute some genus-zero invariants of [C-3/Z(3)], verifying predictions of Aganagic, Bouchard, and Klemm [3]. In a self-contained appendix, we determine the relationship between the quantum cohomology of the A(n) surface singularity and that of its crepant resolution, thereby proving the Crepant Resolution Conjectures of Ruan and of Bryan and Graber [12] in this case.
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