Anti-de Sitter fragmentation

 
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Maldacena, Juan
Michelson, Jeremy
Strominger, Andrew
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https://doi.org/10.1088/1126-6708/1999/02/011
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Maldacena, Juan, Jeremy Michelson, and Andrew Strominger. 1999. “Anti-de Sitter Fragmentation.” Journal of High Energy Physics 1999 (2): 011–011. https://doi.org/10.1088/1126-6708/1999/02/011.
Abstract
Low-energy, near-horizon scaling limits of black holes which lead to string theory on AdS(2) x S-2 are described. Unlike the higher-dimensional cases, in the simplest approach all finite-energy excitations of AdS(2) x S-2 are suppressed. Surviving zero-energy configurations are described. These can include tree-like structures in which the AdS(2) x S-2 throat branches as the horizon is approached, as well as disconnected AdS(2) x S-2 universes. In principle, the black hole entropy counts the quantum ground states on the moduli space of such configurations. In a nonsupersymmetric context AdS(D) for general D can be unstable against instanton-mediated fragmentation into disconnected universes. Several examples are given.
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http://nrs.harvard.edu/urn-3:HUL.InstRepos:41417402

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