Holographic dual of collimated radiation

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 AdS/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 in Phys.Rev.D81 (2010) 126001. The gravitational dual of such 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.

26 pages, 6 figures, invited contribution to the New Journal of Physics Focus Issue "Strongly Correlated Quantum Fluids: From Ultracold Quantum Gases to QCD Plasmas"

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Cited by in corpus (17)

• Strongly Correlated Quantum Fluids: Ultracold Quantum Gases, Quantum Chromodynamic Plasmas, and Holographic Duality
• Holographic Lessons for Quark Dynamics
• Radiation by a heavy quark in N=4 SYM at strong coupling
• Shining a Gluon Beam Through Quark-Gluon Plasma
• Radiation and a dynamical UV/IR connection in AdS/CFT
• Early-Time Energy Loss in a Strongly-Coupled SYM Plasma
• Branes from Light: Embeddings and Energetics for Symmetric $k$-Quarks in $\mathcal{N}=4$ SYM
• No Line on the Horizon: On Uniform Acceleration and Gluonic Fields at Strong Coupling
• Energy loss by radiation to all orders in 1/N
• The Gluonic Field of a Heavy Quark in Conformal Field Theories at Strong Coupling
• Jet evolution from weak to strong coupling
• On the Beaming of Gluonic Fields at Strong Coupling
• On scalar radiation
• On radiation by a heavy quark in N = 4 SYM
• String worldsheet for accelerating quark
• QCD, with Strings Attached
• Strongly-Coupled Quarks and Colorful Black Holes in AdS/CFT