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Collective excitations in a large-dmodel for graphene
2014
Physical Review B
We consider a model of Dirac fermions coupled to flexural phonons to describe a graphene sheet fluctuating in dimension 2+d. We derive the self-consistent screening equations for the quantum problem, exact in the limit of large d. We first treat the membrane alone, and work out the quantum to classical, and harmonic to anharmonic crossover. For the coupled electron-membrane problem we calculate the dressed two-particle propagators of the elastic and electron interactions and find that it
doi:10.1103/physrevb.89.125428
fatcat:htepgsnu2jfmddpkhhswnd754i