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arXiv · 0710.1315

Renormalization group flow of quartic perturbations in graphene: Strong coupling and large-N limits

Joaquin E. Drut·Dam Thanh Son
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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.

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Joaquin E. Drut, Dam Thanh Son. 2008-02-16. Renormalization group flow of quartic perturbations in graphene: Strong coupling and large-N limits. https://doi.org/10.1103/physrevb.77.075115

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