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arXiv 0908.0087hep-th
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关于定向褶皱中离散挠率的注记

Notes on discrete torsion in orientifolds

E. Sharpe

摘要:

在这篇短文中,我们讨论了定向褶皱中的离散挠。特别是,我们适用于物理理解的离散扭转了几年前,作为集团作用在B领域,orientifolds的情况下,并恢复一些旧的结果布劳恩和Stefanski有关群上同调和扭曲的等变K理论。我们还得到了新的结果,包括相位因子的nonorientable世界表和类似物的C字段。

英文摘要:

In this short note we discuss discrete torsion in orientifolds. In particular, we apply the physical understanding of discrete torsion worked out several years ago, as group actions on B fields, to the case of orientifolds, and recover some old results of Braun and Stefanski concerning group cohomology and twisted equivariant K theory. We also derive new results including phase factors for nonorientable worldsheets and analogues for C fields.

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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