%A Noah F. Q. Yuan %T Projective representation of D6 group in twisted bilayer graphene %0 Journal Article %D 2021 %J Chin. Phys. B %R 10.1088/1674-1056/ac00a3 %P 70311-070311 %V 30 %N 7 %U {https://cpb.iphy.ac.cn/CN/abstract/article_123732.shtml} %8 2021-06-22 %X Within the framework of continuum model, we study the projective representation of emergent D6 point group in twisted bilayer graphene. We then construct tight-binding models of the lowest bands without and with external electromagnetic fields, based on the projective representation.