Analytic evidence for the Gubser-Mitra conjecture

Abstract

A simple master equation for the static perturbation of charged black strings is derived while employing the gauge proposed by Kol. As the charge is varied it is found that the potential in the master equation for the perturbations becomes positive exactly when the specific heat turns positive thus forbidding a bound state and the onset of the Gregory-Laflamme instability. It can safely be said that this is the first analytic and explicit evidence for the Gubser-Mitra conjecture, correlating the classical and thermodynamic instabilities of black branes. Possible generalizations of the analysis are also discussed.

9 pages, 2 figures, typos fixed, to appear in Phys. Lett. B

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• Caged black hole thermodynamics: Charge, the extremal limit, and finite size effects
• Non-spherically symmetric black string perturbations in the large D limit
• Gregory-Laflamme instability of 5D electrically charged black strings
• Black p-Branes versus black holes in non-asymptotically flat Einstein-Yang-Mills theory
• Gravitational Instabilities of Uniform Black Strings in AdS