Root Systems and the Quantum Cohomology of ADE resolutions

Root Systems and the Quantum Cohomology of ADE resolutions
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根系统和 ADE 分辨率的量子上同调

DOI:
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发表时间:
2007
期刊:
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通讯作者:
A. Gholampour
A. Gholampour
中科院分区:
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文献类型:
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作者:
J. Bryan;A. Gholampour

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我们计算了Y的C*等变量子上同调环,它是DuVal奇点C^2/G的最小分解,其中G是SU(2)的有限子群。量子积被表示为与G规范关联的ADE根系统。我们将所得到的Frobenius流形推广到非简单镶嵌的根系统,得到任何根系统的仿射根格上的n参数代数结构族。利用Crepant的解析猜想,我们得到了[C^2/G]的Orbilold Gromov-Witten势的一个预言。
We compute the C*-equivariant quantum cohomology ring of Y, the minimal resolution of the DuVal singularity C^2/G where G is a finite subgroup of SU(2). The quantum product is expressed in terms of an ADE root system canonically associated to G. We generalize the resulting Frobenius manifold to non-simply laced root systems to obtain an n parameter family of algebra structures on the affine root lattice of any root system. Using the Crepant Resolution Conjecture, we obtain a prediction for the orbifold Gromov-Witten potential of [C^2/G].