Holographic dual of collimated radiation

Hubeny, V.

doi:10.1088/1367-2630/13/3/035006

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
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