Spinning black holes in (2 + 1)-dimensional string and dilaton gravity

Abstract

We present a new class of spinning black hole solutions in (2 + 1)-dimensional general relativity minimally coupled to a dilaton with potential e bφ Λ. When b = 4, the corresponding spinning black hole is a solution of low energy (2 + 1)-dimensional string gravity. Apart from the limiting case of the BT Z black hole, these spinning black holes have no inner horizon and a curvature singularity only at the origin. We compute the mass and angular momentum parameters of the solutions at spatial infinity, as well as their temperature and entropy.

Rotating hairy black hole and its microscopic entropy in three spacetime dimensions

“…Rotating scalar hairy black holes coupled to different classes of gravity theories in three dimensions have been found in the past [16][17][18]. Here, we focus our attention in a particular class of spinning hairy black holes, which can be built from a static hairy black hole by means a Lorentz boost in the plane t − ϕ.…”

Conformally dressed black hole in 2 + 1 dimensions

“…For instance, minimally and non-minimally coupled dilaton field with various black holes (charged and uncharged, spinning and non-spinning) [4][5][6]28], are known. For other interesting extensions see [3] and references therein.…”

T-duality and spinning solutions in 2 + 1 gravity

“…For Brans-Dicke theory static and stationary black hole solutions were analyzed in [10,11] using the string frame. For EMD theory, Chan and Mann [12] have found static electrically charged solutions and later spinning uncharged solutions [13]. Similarly to the situation in Einstein-Maxwell theory, magnetic EMD solutions were also obtained in [14].…”