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