Dyonic AdS black holes from magnetohydrodynamics

Abstract

We use the AdS/CFT correspondence to argue that large dyonic black holes in anti-de Sitter spacetime are dual to stationary solutions of the equations of relativistic magnetohydrodynamics on the conformal boundary of AdS. The dyonic Kerr-Newman-AdS_4 solution corresponds to a charged diamagnetic fluid not subject to any net Lorentz force, due to orthogonal magnetic and electric fields compensating each other. The conserved charges, stress tensor and R-current of the fluid are shown to be in exact agreement with the corresponding quantities of the black hole. Furthermore, we obtain stationary solutions of the Navier-Stokes equations in four dimensions, which yield predictions for (yet to be constructed) charged rotating black strings in AdS_5 carrying nonvanishing momentum along the string. Finally, we consider Scherk-Schwarz reduced AdS gravity on a circle. In this theory, large black holes and black strings are dual to lumps of deconfined plasma of the associated CFT. We analyze the effects that a magnetic field introduces in the Rayleigh-Plateau instability of a plasma tube, which is holographically dual to the Gregory-Laflamme instability of a magnetically charged black string.

38 pages, 1 figure. Refs. added

References in corpus (16)

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Cited by in corpus (4)

• Weak Field Black Hole Formation in Asymptotically AdS Spacetimes
• Holographic nonlinear hydrodynamics from AdS/CFT with multiple/non-Abelian symmetries
• Bifurcation of Plasma Balls and Black Holes to Lobed Configurations
• Non Uniform Black Strings and Critical Dimensions in $Ad{S}_d$