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arXiv · 0911.4316

Effects of flavor-symmetry violation from staggered fermion lattice simulations of graphene

Joel Giedt·Andrew Skinner·Saroj Nayak
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Abstract

We analyze the effects of flavor splitting from staggered fermion lattice simulations of graphene. Both the unimproved action, and the tadpole improved action with a Naik term show significant flavor symmetry breaking in the spectrum of the Dirac operator. We also measure the average plaquette term and describe how it calls for a reinterpretation of previous lattice Monte Carlo simulation results, due to tadpole improvement. From this we infer that the simulations are indicative of a semi-metal phase for suspended graphene.

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Joel Giedt, Andrew Skinner, Saroj Nayak. 2010-12-21. Effects of flavor-symmetry violation from staggered fermion lattice simulations of graphene. https://doi.org/10.1103/physrevb.83.045420

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