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arXiv 0711.2271math-phgr-qchep-thmath.MP
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2+1量子引力中的量子Goldman括号

A quantum Goldman bracket in 2+1 quantum gravity

J. E. Nelson, R. F. Picken

摘要:

在2+1维时空的量子引力的背景下,我们描述了在曲面相交环的量子戈德曼括号的建设进展。利用R^2中的分段线性路径(表示空间流形上的环,即环面)和具有非对易分量的量子联系,我们回顾了两条同伦路径的完整性和威尔逊圈如何通过它们之间的有符号面积的相位联系起来。在与其他路径的交叉点处改道的路径出现在r.h. s上。高盛集团。为了更好地理解它们的性质,我们引入了整数点的概念,由两个相交的路径所跨越的区间内,并表明,改道路径必须通过这些整数点。

英文摘要:

In the context of quantum gravity for spacetimes of dimension 2+1, we describe progress in the construction of a quantum Goldman bracket for intersecting loops on surfaces. Using piecewise linear paths in R^2 (representing loops on the spatial manifold, i.e. the torus) and a quantum connection with noncommuting components, we review how holonomies and Wilson loops for two homotopic paths are related by phases in terms of the signed area between them. Paths rerouted at intersection points with other paths occur on the r.h.s. of the Goldman bracket. To better understand their nature we introduce the concept of integer points inside the parallelogram spanned by two intersecting paths, and show that the rerouted paths must necessarily pass through these integer points.

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