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Black holes in N=8 supergravity from SO(4,4) hidden symmetries

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arxiv 1404.2602 v4 pith:IC73WTW5 submitted 2014-04-09 hep-th gr-qc

Black holes in N=8 supergravity from SO(4,4) hidden symmetries

classification hep-th gr-qc
keywords blackgeneralholemodelsupergravityasymptoticallyextremalflat
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We detail the construction of the most general asymptotically flat, stationary, rotating, non-extremal, dyonic black hole of the four-dimensional N=2 supergravity coupled to 3 vector multiplets that describes the STU model. It generates through U-dualities the most general asymptotically flat, stationary black hole of N=8 supergravity. We develop the solution generating technique based on SO(4,4)/SL(2,R)^4 coset model symmetries, with an emphasis on the 4-fold permutation symmetry of the gauge fields. We indicate how previously known non-extremal and extremal solutions of the STU model are recovered as limiting cases. Several properties of the general black hole solution are discussed, including its thermodynamics, the quadratic mass formula, the Bogomolny-Prasad-Sommerfield limit, the slow and fast extremal rotating limits, its properties in regards to the Kerr/conformal field theory correspondence, its Killing tensors and the separability of geodesic motion and probe scalars.

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