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arXiv 0912.2184math.DGhep-th
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扭转解析挠率

Twisted Analytic Torsion

Varghese Mathai, Siye Wu

摘要:

我们回顾了Reidemeister挠率、Ray-Singer解析挠率和Cheeger-M“uller定理。我们描述了解析扭转的德拉姆复杂的磁通形式介绍了目前的作者,并回顾其性质。本文定义了不变流形式扭的主圆丛的全空间上不变微分形式复形的一种新的扭解析挠率。我们证明了当维数为偶数时,这种挠率在度量和通量形式的一定变形下是不变的。在T-对偶下,不变形式的扭曲挠率在任意维上都是相互逆的。T-对偶将丛的拓扑、通量形式和圆纤维的半径与它的逆交换。

英文摘要:

We review the Reidemeister torsion, Ray-Singer's analytic torsion and the Cheeger-M"uller theorem. We describe the analytic torsion of the de Rham complex twisted by a flux form introduced by the current authors and recall its properties. We define a new twisted analytic torsion for the complex of invariant differential forms on the total space of a principal circle bundle twisted by an invariant flux form. We show that when the dimension is even, such a torsion is invariant under certain deformation of the metric and the flux form. Under T-duality which exchanges the topology of the bundle and the flux form and the radius of the circular fiber with its inverse, the twisted torsions of invariant forms are inverse to each other for any dimension.

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