Friday, June 28, 2013

1306.6396 (Thomas Faulkner et al.)

Charge transport by holographic Fermi surfaces    [PDF]

Thomas Faulkner, Nabil Iqbal, Hong Liu, John McGreevy, David Vegh
We compute the contribution to the conductivity from holographic Fermi surfaces obtained from probe fermions in an AdS charged black hole. This requires calculating a certain part of the one-loop correction to a vector propagator on the charged black hole geometry. We find that the current dissipation is as efficient as possible and the transport lifetime coincides with the single-particle lifetime. In particular, in the case where the spectral density is that of a marginal Fermi liquid, the resistivity is linear in temperature.
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