Non-Abelian Magnetized Blackholes and Unstable Attractors
arXiv:hep-th/0612181 · doi:10.1016/j.nuclphysb.2007.08.003
Abstract
Fluctuations of non-Abelian gauge fields in a background magnetic flux contain tachyonic modes and hence the background is unstable. We extend these results to the cases where the background flux is coupled to Einstein gravity and show that the corresponding spherically symmetric geometries, which in the absence of a cosmological constant are of the form of Reissner-Nordstrom blackholes or the AdS_2xS^2, are also unstable. We discuss the relevance of these instabilities to several places in string theory including various string compactifications and the attractor mechanism. Our results for the latter imply that the attractor mechanism shown to work for the extremal Abelian charged blackholes, cannot be applied in a straightforward way to the extremal non-Abelian colored blackholes.
arXiv comment23 pages, 3 .eps figures; v2: Stability of minimal charge blackhole emphasized, Refs added
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- Holographic Phase Transition to Topological Dyons