Charged C-metric with conformally coupled scalar field

Details Charged C-metric with conformally coupled scalar field Charged C-metric with conformally coupled scalar field

2009-06-30

arxiv.org/abs/0906.5568v2

Class.Quant.Grav.26:175012,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

regular article, no figures, typos corrected, to appear in Classical and Quantum Gravity

Scientific paper

10.1088/0264-9381/26/17/175012

We present a generalisation of the charged C-metric conformally coupled with a scalar field in the presence of a cosmological constant. The solution is asymptotically flat or a constant curvature spacetime. The spacetime metric has the geometry of a usual charged C-metric with cosmological constant, where the mass and charge are equal. When the cosmological constant is absent it is found that the scalar field only blows up at the angular pole of the event horizon. The presence of the cosmological constant can generically render the scalar field regular where the metric is regular, pushing the singularity beyond the event horizon. For certain cases of enhanced acceleration with a negative cosmological constant, the conical singularity disappears all together and the scalar field is everywhere regular. The black hole is then rather a black string with its event horizon extending all the way to asymptotic infinity and providing itself the necessary acceleration.

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