Renormalization group flow of quartic perturbations in graphene: Strong coupling and large-N limits
arXiv:0710.1315 · doi:10.1103/PhysRevB.77.075115
Abstract
We explore the renormalization group flow of quartic perturbations in the low-energy theory of graphene, in the strong Coulomb coupling and large-N limits, where N is the number of fermion flavors. We compute the anomalous dimensions of the quartic couplings u up to next-to-leading order in 1/N 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.
10 pages, 6 figures. Replaced with published version
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