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          Institute: MPI für Physik     Collection: YB 2016     Display Documents



ID: 716238.0, MPI für Physik / YB 2016
Holographic charge localization at brane intersections
Authors:Araujo, Mario; Arean, Daniel; Erdmenger, Johanna; Lizana, Javier M.
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:Using gauge/gravity duality, we investigate charge localization near an interface in a strongly coupled system. For this purpose we consider a top-down holographic model and determine its conductivities. Our model corresponds to a holographic interface which localizes charge around a (1+1)-dimensional defect in a (2+1)-dimensional system. The setup consists of a D3/D5 intersection at finite temperature and charge density. We work in the probe limit, and consider massive embeddings of a D5-brane where the mass depends on one of the field theory spatial directions, with a profile interpolating between a negative and a positive value. We compute the conductivity in the direction parallel and perpendicular to the interface. For the latter case we are able to express the DC conductivity as a function of background horizon data. At the interface, the DC conductivity in the parallel direction is enhanced up to five times with respect to that in the orthogonal one. We study the implications of broken translation invariance for the AC and DC conductivities.
Classification / Thesaurus:Theoretical Physics
Comment of the Author/Creator:36 pages, 12 figures. v2: typos corrected, JHEP version
Document Type:Article
Communicated by:MPI für Physik
Affiliations:MPI für Physik
Identifiers:LOCALID:MPP-2015-90
URL:http://inspirehep.net/search?p=find+eprint+1505.05...
URL:http://arxiv.org/abs/1505.05883
URL:http://arXiv.org/abs/arxiv:1505.05883
URL:https://publications.mppmu.mpg.de/?action=search&m...
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