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arXiv 1109.4834hep-thmath.AT
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NS5-brane的拓扑方面

Topological aspects of the NS5-brane

Hisham Sati

摘要:

本文研究了IIA型弦论中NS 5-膜有效作用量的某些拓扑性质。为了便于研究相应的配分函数,我们定义了一个上同调类,其消失是这个函数被良好定义的必要条件。这导致了各种拓扑条件,包括扭曲的五膜结构以及由K-理论描述产生的二次上同调运算。我们解释了这些操作如何也产生的拓扑部分的行动,以及相位的配分函数。部分讨论也适用于M5-膜。

英文摘要:

In this note we investigate certain topological aspects of the effective action of the NS5-brane in type IIA string theory. To facilitate the study of the corresponding partition function, we define a cohomology class whose vanishing is a necessary condition for this function to be well-defined. This leads to various topological conditions, including a twisted Fivebrane structure as well as secondary cohomology operations arising from a K-theoretic description. We explain how these operations also generate the topological part of the action as well as the phase of the partition function. Part of the discussion also applies to the M5-brane.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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