Impure AdS/CFT

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dc.creatorHartnoll, Sean A.
dc.creatorHerzog, Christopher P.
dc.date2008-01-11
dc.date2008-02-14
dc.date.accessioned2026-07-07T11:55:09Z
dc.date.available2026-07-07T11:55:09Z
dc.descriptionWe study momentum relaxation due to dilute, weak impurities in a strongly coupled CFT, a truncation of the M2 brane theory. Using the AdS/CFT correspondence, we compute the relaxation time scale as a function of the background magnetic field B and charge density ρ. The theory admits two different types of impurities. We find that for magnetic impurities, momentum relaxation due to the impurity is suppressed by a background B or ρ. For electric impurities, due to an underlying instability in the theory towards an ordered phase, the inverse relaxation time scale increases dramatically near \sqrt{B^2 + ρ^2/σ^2_0} \sim 21 T^2. We compute the Nernst response for the impure theory, and comment on similarities with recent measurements in superconductors.
dc.description26 pages, 11 figures; v2 ref added
dc.identifierhttps://arxiv.org/abs/0801.1693
dc.identifierhttp://arxiv.org/abs/0801.1693
dc.identifierPhys.Rev.D77:106009,2008
dc.identifierdoi:10.1103/PhysRevD.77.106009
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/205153
dc.subjectHigh Energy Physics - Theory
dc.subjectStrongly Correlated Electrons
dc.titleImpure AdS/CFT
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