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arxiv: 1405.2926 · v3 · pith:MGPWCOQGnew · submitted 2014-05-12 · ✦ hep-th · cond-mat.str-el

Conductivities for Hyperscaling Violating Geometries

classification ✦ hep-th cond-mat.str-el
keywords scalinghyperscalingviolatingconductivitiesexponentgeometriesreproducedadditional
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We show that many results about holographic conductivities in geometries with hyperscaling violating scaling can be reproduced from simple scaling laws in the dual field theory. We show that the electro-magnetic response of probe branes in these systems require at least one additional scaling parameter Phi beyond the usual dynamical exponent z and hyperscaling violating exponent theta, as also pointed out in earlier work. We show that the scaling exponents can be chosen in such a way that the temperature dependence of DC conductivity and Hall angle in strange metals can be reproduced.

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