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arXiv 1104.5576math.QA
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有穷级映射环面I的Witten-Reshetikhin-Turaev不变量

The Witten-Reshetikhin-Turaev invariants of finite order mapping tori I

Jørgen Ellegaard Andersen

摘要:

我们给出了三个闭定向流形的Witten-Reshetikhin-Turaev量子不变量的渐近展开猜想。对于有穷级映射环面,我们通过几何规范理论方法研究了这些量子不变量的量子表示,并利用Baum,Fulton,MacPherson和Quart的Lefschetz-Riemann-Roch定理证明了量子不变量可以表示为映射环面上平坦联络的模空间的分量之和.此外,我们表明,对应于一个组件是一个多项式的水平$k$,加权由一个复杂的相位,这是$k$倍的陈-西蒙斯不变量对应的组件。我们表示这些多项式的系数的上同调配对的不动点集的模空间的平面上的联系。我们明确地描述的不动点集的商orbifold黎曼曲面的模空间和光滑的组件,我们表示上述系数的上同调环的已知发电机。我们提供了一个明确的公式中的塞弗特不变量的映射环面的贡献,从每个光滑的组件。我们进一步建立了这些有穷级映射环面的渐近展开猜想和增长率猜想。

英文摘要:

We formulate the Asymptotic Expansion Conjecture for the Witten-Reshetikhin-Turaev quantum invariants of closed oriented three manifolds. For finite order mapping tori, we study these quantum invariants via the geometric gauge theory approach to the corresponding quantum representations and prove, using a version of the Lefschetz-Riemann-Roch Theorem due to Baum, Fulton, MacPherson and Quart, that the quantum invariants can be expressed as a sum over the components of the moduli space of flat connections on the mapping torus. Moreover, we show that the term corresponding to a component is a polynomial in the level $k$, weighted by a complex phase, which is $k$ times the Chern-Simons invariant corresponding to the component. We express the coefficients of these polynomials in terms of cohomological pairings on the fixed point set of the moduli space of flat connections on the surface. We explicitly describe the fixed point set in terms of moduli spaces of the quotient orbifold Riemann surface and for the smooth components we express the aforementioned coefficients in terms of the known generators of the cohomology ring. We provide an explicit formula in terms of the Seifert invariants of the mapping torus for the contributions from each of the smooth components. We further establish that the Asymptotic Expansion Conjecture and the Growth Rate Conjecture for these finite order mapping tori.

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