Instabilities of Kerr-AdS_5 x S^5 Spacetime

Details Instabilities of Kerr-AdS_5 x S^5 Spacetime Instabilities of Kerr-AdS_5 x S^5 Spacetime

2008-12-03

arxiv.org/abs/0812.0718v1

Prog.Theor.Phys.121:1099-1124,2009

Physics

High Energy Physics

High Energy Physics - Theory

30 pages, 7 figures

Scientific paper

10.1143/PTP.121.1099

We study gravitational perturbations of the Kerr-AdS_5 x S^5 spacetime with equal angular momenta. In this spacetime, we found the two kinds of classical instabilities, superradiant and Gregory-Laflamme instabilities. The superradiant instability is caused by the wave amplification via superradiance, and by wave reflection due to the potential barrier of the AdS spacetime. The Gregory-Laflamme instability appears in Kaluza-Klein modes of the internal space S^5 and breaks the symmetry SO(6). Taken into account these instabilities, the phase structure of Kerr-AdS_5 x S^5 spacetime is revealed. The implication for the AdS/CFT correspondence is also discussed.

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