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arXiv 2003.05662hep-th
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蜂窝晶格上的Bloch电子与复曲面Calabi-Yau几何

Bloch electrons on honeycomb lattice and toric Calabi-Yau geometry

Yasuyuki Hatsuda, Yuji Sugimoto

摘要:

我们发现了均匀磁场中二维蜂窝晶格上Bloch电子的谱问题与复曲面Calabi-Yau三重量子几何的谱问题之间的一个新的关系。我们证明了布洛赫电子的差分方程与卡-丘三重态的量子镜像曲线是一致的。作为应用,我们表明,在弱磁通量制度的电子光谱的带宽系统计算的拓扑弦自由能在锥奇点的Nekrasov-Shatashvili极限。

英文摘要:

We find a new relation between the spectral problem for Bloch electrons on a two-dimensional honeycomb lattice in a uniform magnetic field and that for quantum geometry of a toric Calabi-Yau threefold. We show that a difference equation for the Bloch electron is identical to a quantum mirror curve of the Calabi-Yau threefold. As an application, we show that bandwidths of the electron spectra in the weak magnetic flux regime are systematically calculated by the topological string free energies at conifold singular points in the Nekrasov-Shatashvili limit.

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