Mathematics of magic angles in a model of twisted bilayer graphene

Mathematics of magic angles in a model of twisted bilayer graphene
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DOI:
10.2140/pmp.2022.3.69
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发表时间:
2020-08
期刊:
Probability and Mathematical Physics
影响因子:
--
通讯作者:
Simon Becker;M. Embree;Jens Wittsten;M. Zworski
Simon Becker;M. Embree;Jens Wittsten;M. Zworski
中科院分区:
其他
文献类型:
--
作者:
Simon Becker;M. Embree;Jens Wittsten;M. Zworski

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We provide a mathematical account of the recent Physical Reviews Letter by Tarnopolsky--Kruchkov--Vishwanath. The new contributions are a spectral characterization of magic angles, its accurate numerical implementation and an exponential estimate on the squeezing of all bands as the angle decreases. Pseudospectral phenomena due to the non-hermitian nature of operators appearing in the model play a crucial role in our analysis.