Transport Properties of Holographic Defects

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dc.creatorMyers, Robert C.
dc.creatorWapler, Matthias C.
dc.date2008-11-04
dc.date2009-01-02
dc.date.accessioned2026-07-07T12:27:33Z
dc.date.available2026-07-07T12:27:33Z
dc.descriptionWe study the charge transport properties of fields confined to a (2+1)-dimensional defect coupled to (3+1)-dimensional super-Yang-Mills at large-$\nc$ and strong coupling, using AdS/CFT techniques applied to linear response theory. The dual system is described by $\nf$ probe D5- or D7-branes in the gravitational background of $\nc$ black D3-branes. Surprisingly, the transport properties of both defect CFT's are essentially identical -- even though the D7-brane construction breaks all supersymmetries. We find that the system possesses a conduction threshold given by the wave-number of the perturbation and that the charge transport arises from a quasiparticle spectrum which is consistent with an intuitive picture where the defect acquires a finite width. We also examine finite-$λ$ modifications arising from higher derivative interactions in the probe brane action.
dc.description54 pages, 22 figures, references added, minor changes to figures and comments, final version published in JHEP
dc.identifierhttps://arxiv.org/abs/0811.0480
dc.identifierhttp://arxiv.org/abs/0811.0480
dc.identifierJHEP 0812:115,2008
dc.identifierdoi:10.1088/1126-6708/2008/12/115
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/215242
dc.subjectHigh Energy Physics - Theory
dc.subjectStrongly Correlated Electrons
dc.titleTransport Properties of Holographic Defects
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