Odd-Parity Negative Modes of Einstein-Yang-Mills Black Holes and Sphalerons
Mikhail S. Volkov, Dmitri D. Gal'tsov
Abstract
An analytical proof of the existence of negative modes in the odd--parity perturbation sector is given for all known non-abelian Einstein--Yang--Mills black holes. The significance of the normalizability condition in the functional stability analysis is emphasized. The role of the odd--parity negative modes in the sphaleron interpretation of the Bartnik--McKinnon solutions is discussed.
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