On the electron-polaron--electron-polaron scattering and Landau levels in pristine graphene-like quantum electrodynamics

Abstract

The parity-preserving $U(1)\times U(1)$ massless QED${}_3$ is proposed as a pristine graphene-like planar quantum electrodynamics model. The spectrum content, the degrees of freedom, spin, masses and charges of the quasiparticles (electron-polaron, hole-polaron, photon and Néel quasiparticles) which emerge from the model are discussed. The four-fold broken degeneracy of the Landau levels, similar as the one experimentally observed in pristine graphene submitted to high applied external magnetic fields, is obtained. Furthermore, the model exhibits zero-energy Landau level indicating a kind of anomalous quantum Hall effect. The electron-polaron--electron-polaron scattering potentials in $s$- and $p$-wave states mediated by photon and Néel quasiparticles are computed and analyzed. Finally, the model foresees that two electron-polarons ($s$-wave state) belonging to inequivalent $\mathbf{K}$ and ${\mathbf{K}}^{\prime }$ points in the Brillouin zone might exhibit attractive interaction, while two electron-polarons ($p$-wave state) lying both either in $\mathbf{K}$ or in ${\mathbf{K}}^{\prime }$ points experience repulsive interaction.

arXiv comment8 pages, 2 figures, Eur. Phys. J. B93 (2020) 187

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• On the absence of bound states for a planar massless Brown-Ravenhall-type operator
• The spectrum consistency of fractional quantum Hall effect model
• The BPHZL renormalization of a planar quantum electrodynamics up to 2-loops and beyond
• Self-dual Maxwell-Chern-Simons solitons in a parity-invariant scenario
• Vortices in a parity-invariant Maxwell-Chern-Simons model