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arXiv math-ph/0501014math-phmath.MPmath.PR
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紧曲面上非平凡丛的离散和连续Yang-Mills测度

Discrete and continuous Yang-Mills measure for non-trivial bundles over compact surfaces

Thierry Levy

摘要:

对于紧曲面上主丛的每一个同构类,我们构造了一个紧曲面上的Yang-Mills测度。为此,我们定义了一个新的离散规范理论,它本质上是通常规范理论的覆盖。证明了对应于不同同构类的丛或对应于不同总面积的曲面的测度是相互奇异的。我们还给出了基于胖图形式的配分函数的组合计算。

英文摘要:

We construct one Yang-Mills measure on a compact surface for each isomorphism class of principal bundles over this surface. For this, we define a new discrete gauge theory which is essentially a covering of the usual one. We prove that the measures correponding to different isomorphism classes of bundles or to different total areas of the surface are mutually singular. We give also a combinatorial computation of the partition functions based on the formalism of fat graphs.

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