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2016-04-24 - Article/Dans un journal avec peer-review - Anglais - 16 page(s)

Brihaye Yves , Ducobu Ludovic , "Black holes with scalar hair in Einstein–Gauss–Bonnet gravity" in International Journal of Modern Physics. D

  • Edition : World Scientific Publishing Co. (Singapore)
  • Codes CREF : Physique théorique et mathématique (DI1210), Gravitation (DI1216)
  • Unités de recherche UMONS : Physique théorique et mathématique (S814)
  • Instituts UMONS : Institut de Recherche sur les Systèmes Complexes (Complexys)

Abstract(s) :

(Anglais) The Einstein-Gauss-Bonnet gravity in five dimensions is extended by scalar fields and the corresponding equations are reduced to a system of non-linear differential equations. A large family of regular solutions of these equations is shown to exist. Generically, these solutions are spinning black holes with scalar hairs. They can be characterized (but not uniquely) by an horizon and an angular velocity on this horizon. Taking particular limits the black holes approach boson star or become extremal, in any case the limiting configurations remain hairy.