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.