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Holographic dual of collimated radiation

Hubeny, V.

Authors

V. Hubeny



Abstract

We propose a new and simple method of estimating the radiation due to an accelerated quark in a strongly coupled medium, within the framework of the anti-de Sitter (AdS)/conformal field theory (CFT) correspondence. In particular, we offer a heuristic explanation of the collimated nature of synchrotron radiation produced by a circling quark, which was recently studied by Athanasiou et al (2010 Phys. Rev. D 81 26001). The gravitational dual of such a quark is a coiling string in AdS, whose backreaction on the spacetime geometry remains tightly confined, as if 'beamed' towards the boundary. While this appears to contradict conventional expectations from the scale/radius duality, we resolve the issue by observing that the backreaction of a relativistic string is reproduced by a superposition of gravitational shock waves. We further demonstrate that this proposal allows us to reduce the problem of computing the boundary stress tensor to merely calculating geodesics in AdS, as opposed to solving linearized Einstein's equations.

Citation

Hubeny, V. (2011). Holographic dual of collimated radiation. New Journal of Physics, 13(3), Article 035006. https://doi.org/10.1088/1367-2630/13/3/035006

Journal Article Type Article
Publication Date Mar 1, 2011
Deposit Date Dec 21, 2011
Publicly Available Date May 6, 2014
Journal New Journal of Physics
Electronic ISSN 1367-2630
Publisher IOP Publishing
Peer Reviewed Peer Reviewed
Volume 13
Issue 3
Article Number 035006
DOI https://doi.org/10.1088/1367-2630/13/3/035006
Public URL https://durham-repository.worktribe.com/output/1501703

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