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arXiv 2408.09758hep-thmath-phmath.MP
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基于Atiyah-Segal-Singer不动点定理的轨形上指标计算

Computation of the index on orbifold from the Atiyah-Segal-Singer fixed point theorem

Shoto Aoki, Maki Takeuchi

AI总结:

本研究利用Atiyah-Segal-Singer不动点定理计算轨形上的手征零模指标,无需直接计算零模,适用于任意轨形上的费米子理论,并给出了多个典型轨形的指标计算示例。

摘要:

我们借助Atiyah-Segal-Singer不动点定理,研究轨形上的独立手征零模。该计算所需信息包括轨形的不动点以及空间对称性在这些点上的作用方式,这不同于以往需要计算零模的研究。由于该不动点定理可应用于任意轨形上的任意费米子理论,即便在零模计算存在难度的轨形上,或是存在非平凡规范构型的情况下,我们也能确定指标。我们以$T^{2}/ \mathbb{Z}_N\\,(N=2,3,4,6)$和$T^{4}/ \mathbb{Z}_N\\,(N=2,3,5)$为例计算了其上的指标。此外,我们还尝试计算了与$D_4$格点相关的Coxeter轨形上的指标。

英文摘要:

We investigate the independent chiral zero modes on the orbifolds from the Atiyah-Segal-Singer fixed point theorem. The required information for this calculation includes the fixed points of the orbifold and the manner in which the spatial symmetries act on these points, unlike previous studies that necessitated the calculation of zero modes. Since the fixed point theorem can be applied to any fermionic theory on any orbifold, it allows us to determine the index even on orbifolds where the calculation of zero modes is challenging or in the presence of non-trivial gauge configurations. We compute the indices on the $T^{2}/ \mathbb{Z}_N\,(N=2,3,4,6)$ and $T^{4}/ \mathbb{Z}_N\,(N=2,3,5)$ as examples. Furthermore, we also attempt to compute the indices on a Coxeter orbifold related to the $D_4$ lattice.

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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