Strange Metal Transport Realized by Gauge/Gravity Duality

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Science  05 Aug 2010:
DOI: 10.1126/science.1189134


Fermi liquid theory explains the thermodynamic and transport properties of most metals. The so-called non-Fermi liquids deviate from these expectations and include exotic systems such as the strange metal phase of cuprate superconductors, and heavy fermion materials near a quantum phase transition. We employ the anti de-Sitter/Conformal Field Theory correspondence to identify a class of non-Fermi liquids; their low-energy behavior is found to be governed by a nontrivial infrared fixed point which exhibits nonanalytic scaling behavior only in the time direction. For some representatives of this class, the resistivity has a linear temperature dependence, as is the case for strange metals.