Abstract
We explore the renormalization group flow of quartic perturbations in the low-enegy theory of graphene, in the strong Coulomb coupling and large- limits, where is the number of fermion flavors. We compute the anomalous dimensions of the quartic couplings up to leading order in and find both relevant and irrelevant directions in the space of quartic couplings. We discuss possible phase diagrams and relevance for the physics of graphene.
- Received 12 October 2007
DOI:https://doi.org/10.1103/PhysRevB.77.075115
©2008 American Physical Society