Rotating Dilaton Black Holes

Details Rotating Dilaton Black Holes Rotating Dilaton Black Holes

1995-04-19

arxiv.org/abs/gr-qc/9504027v1

Phys.Rev. D52 (1995) 3543-3547

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

11 pages, RevTex, one figure included

Scientific paper

10.1103/PhysRevD.52.3543

We consider the axially symmetric coupled system of gravitation, electromagnetism and a dilaton field. Reducing from four to three dimensions, the system is described by gravity coupled to a non-linear $\sigma$-model. We find the target space isometries and use them to generate new solutions. It seems that it is only possible to generate rotating solutions from non-rotating ones for the special cases when the dilaton coupling parameter $a=0, \pm \sqrt{3}$. For those particular values, the target space symmetry is enlarged.

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