Theory of angle-resolved photoemission spectroscopy in graphene-based moire superlattices

Graphene-based moire superlattices are now established as an interesting platform for strongly correlated many-electron physics, and they have so far been characterized mainly by transport and scanning tunneling microscopy (STM) measurements. Motivated by recent experimental progress, we present a theoretical model study whose aim is to assess the potential of angle-resolved photoemission spectroscopy (ARPES) to resolve some of the many open issues in these systems. The theory is developed specifically for graphene on hexagonal boron nitride (G/hBN) and twisted bilayer graphene (TBG) moire superlattices, but it is readily generalized to any system with active degrees of freedom in graphene sheets.