Non-Abelian gauge fields in twisted bilayer graphene
Pablo San Jose
Instituto de Estructura de la Materia, CSIC, Madrid
We present an overview of the modeling of low energy twisted graphene bilayers and of its unusual electronic properties. These include charge confinement around zero energy and velocity suppression at recurrent special twist angles. We show that these come as a consequence of non-Abelian gauge fields that arise from the spatial Moiré pattern in interlayer couplings.