Dynamical gap generation in graphene with frequency dependent renormalization effects
Mesoscale and Nanoscale Physics
2016-09-07 v1 High Energy Physics - Phenomenology
Abstract
We study the frequency dependencies in the renormalization of the fermion Greens function for the -band electrons in graphene and their influence on the dynamical gap generation at sufficiently strong interaction. Adopting the effective QED-like description for the low-energy excitations within the Dirac-cone region we self consistently solve the fermion Dyson-Schwinger equation in various approximations for the photon propagator and the vertex function with special emphasis on frequency dependent Lindhard screening and retardation effects.
Cite
@article{arxiv.1605.01550,
title = {Dynamical gap generation in graphene with frequency dependent renormalization effects},
author = {M. E. Carrington and C. S. Fischer and L. von Smekal and M. H. Thoma},
journal= {arXiv preprint arXiv:1605.01550},
year = {2016}
}
Comments
19 pages, 5 figures