Near-horizon dynamics of particle in extreme Reissner-Nordström and Clément-Gal'tsov black hole backgrounds: action-angle variables

Abstract

We analyze the periodic motion in the conformal mechanics describing the particles moving near the horizon of extreme Reissner-Nordström and axion-dilaton (Clément-Gal'tsov) black holes. For this purpose we extract the (two-dimensional) compact ("angular") parts of these systems and construct their action-angle variables. In the first case we get the well-known spherical Landau problem, which possesses hidden $so(3)$ symmetry, while in the latter case the system does not have hidden constant of motion. In both cases we indicate the existence of "critical points", separating the regions of periodic motions with qualitatively different properties.

arXiv comment7 pages. arXiv admin note: text overlap with arXiv:1108.3394

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