FM 13-2010 (arXiv:1012.5736)

Authors: Vieri Mastropietro

Title: Conductivity between Luttinger liquids: coupled chains and bilayer graphene
Abstract: The conductivity properties between Luttinger liquids are analyzed by exact Renormalization Group methods. We prove that in a two chain system or in a model of bilayer graphene, described by two coupled fermionic honeycomb lattices interacting with a gauge eld, the transverse optical conductivity at nite temperature is anomalous and decreasing together with the frequency as a power law with Luttinger liquid exponent.

Keywords: Lattice fermions, two-chains model, Renormalization Group, Drude weight, conductivity, Anderson confinement.

Vieri Mastropietro
Dipartimento di Matematica
Università di Roma Tor Vergata
V.le della Ricerca Scientifica 1, 00133 Roma - Italy
e-mail: mastropi AT mat DOT uniroma2 DOT it