Radiation of a circulating quark in strongly coupled N=4 super Yang-Mills theory

Details Radiation of a circulating quark in strongly coupled N=4 super Yang-Mills theory Radiation of a circulating quark in strongly coupled N=4 super Yang-Mills theory

2010-09-09

arxiv.org/abs/1009.1885v1

AIP Conf.Proc.1317:346-353,2011

Physics

High Energy Physics

High Energy Physics - Theory

8 pages, 2 figures - Talk presented by D. Nickel at QCD@Work, June 20-23rd, 2010, Martina Franca, Italy

Scientific paper

10.1063/1.3536583

The energy density and angular distribution of power radiated by a quark undergoing circular motion in strongly coupled ${\cal N}=4$ supersymmetric Yang-Mills (SYM) theory is computed using gauge/gravity duality. The results are qualitatively similar to that of synchrotron radiation produced by an electron in circular motion in classical electrodynamics: At large velocities the quark emits radiation in a narrow beam along its velocity vector with a characteristic opening angle $\alpha \sim 1/\gamma$ and radial thickness scaling like $\sim 1/\gamma^3$.

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