Approximate strange metallic behavior in AdS
arXiv:1202.3555
Abstract
We show for unit dynamical exponent, , the appearance of the Fermi liquid and non-Fermi liquid behavior as we tune the charge density and the magnetic field in 3+1 dimensional field theory using the gauge-gravity duality. There exists an upturn behavior of the resistivity only along the direction perpendicular to the magnetic field. Also, there exists a universal behavior of the resistivity, independent of the dimensionality of the spacetime, in a specific corner of the parameter space, namely, in the large charge density and small magnetic field limit: the longitudinal conductivity goes as , whereas the Hall conductivity goes as . It means the Hall coefficient goes as . We compute the diffusion constant from the flow equation of the conductivity.
1+32 pages, 9 figures and LATEX