arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.05570hep-th
收藏

零模计数公式与orbifold紧化中的零点

Zero-mode counting formula and zeros in orbifold compactifications

Makoto Sakamoto, Maki Takeuchi, Yoshiyuki Tatsuta

摘要:

受Atiyah-Singer指数定理的启发,我们深入分析了具有磁通量背景的环形轨道$T^2/\mathbb{Z}_N$($N = 2, 3, 4, 6$)上的独立零模数目及其零点.我们首先显示了一个完整的列表属于$\mathbb{Z}_{N}$本征值$η$的轨道零模式的数量$n_η$。由于$n_η$相当复杂地依赖于通量量子$M$、Scherk-Schwarz扭曲相位$(α_1, α_2)$和$\mathbb{Z}_{N}$本征值$η$,因此似乎很难用一个简单的公式来普遍解释$n_η$。然而,我们成功地找到了一个单一的零模计数公式$n_η = (M-V_η)/N + 1$,其中$V_η$表示在轨道$T^2/\mathbb{Z}_N$上的不动点处的缠绕数之和。该公式适用于任何模式。

英文摘要:

We thoroughly analyze the number of independent zero modes and their zero points on the toroidal orbifold $T^2/\mathbb{Z}_N$ ($N = 2, 3, 4, 6$) with magnetic flux background, inspired by the Atiyah-Singer index theorem. We first show a complete list for the number $n_η$ of orbifold zero modes belonging to $\mathbb{Z}_{N}$ eigenvalue $η$. Since it turns out that $n_η$ quite complicatedly depends on the flux quanta $M$, the Scherk-Schwarz twist phase $(α_1, α_2)$, and the $\mathbb{Z}_{N}$ eigenvalue $η$, it seems hard that $n_η$ can be universally explained in a simple formula. We, however, succeed in finding a single zero-mode counting formula $n_η = (M-V_η)/N + 1$, where $V_η$ denotes the sum of winding numbers at the fixed points on the orbifold $T^2/\mathbb{Z}_N$. The formula is shown to hold for any pattern.

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。

↑