TY - JOUR
T1 - Instabilities of kerr-AdS5 × S5 spacetime
AU - Murata, Keiju
PY - 2009/5
Y1 - 2009/5
N2 - We study gravitational perturbations of the Kerr-AdS5 × S5 spacetime with equal angular momenta. In this spacetime, we found the two types of classical instability, superradiant and Gregory-Laflamme. 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 and breaks the symmetry SO(6). By taking into account these instabilities, the phase structure of Kerr-AdS5 x S5 spacetime is revealed. The implication for the AdS/CFT correspondence is also discussed.
AB - We study gravitational perturbations of the Kerr-AdS5 × S5 spacetime with equal angular momenta. In this spacetime, we found the two types of classical instability, superradiant and Gregory-Laflamme. 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 and breaks the symmetry SO(6). By taking into account these instabilities, the phase structure of Kerr-AdS5 x S5 spacetime is revealed. The implication for the AdS/CFT correspondence is also discussed.
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U2 - 10.1143/PTP.121.1099
DO - 10.1143/PTP.121.1099
M3 - Article
AN - SCOPUS:69649088585
VL - 121
SP - 1099
EP - 1124
JO - Progress of Theoretical Physics
JF - Progress of Theoretical Physics
SN - 0033-068X
IS - 5
ER -