Conductivity between Luttinger liquids: coupled chains and bilayer graphene
arXiv:1012.5736 · doi:10.1103/PhysRevB.84.035109
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 field, the transverse optical conductivity at finite temperature is anomalous and decreasing together with the frequency as a power law with Luttinger liquid exponent.
Title changed, new section on bilayer graphene added
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