%0 Journal Article
%T Numerical simulations of single and binary black holes in scalar-tensor theories: circumventing the no-hair theorem
%A Berti
%A Emanuele
%A Cardoso
%A Vitor
%A Gualtieri
%A Leonardo
%A Horbatsch
%A Michael
%A Sperhake
%A Ulrich
%J High Energy Physics - Phenomenology
%D 2013
%I 
%X Scalar-tensor theories are a compelling alternative to general relativity and one of the most accepted extensions of Einstein's theory. Black holes in these theories have no hair, but could grow "wigs" supported by time-dependent boundary conditions or spatial gradients. Time-dependent or spatially varying fields lead in general to nontrivial black hole dynamics, with potentially interesting experimental consequences. We carry out a numerical investigation of the dynamics of single and binary black holes in the presence of scalar fields. In particular we study gravitational and scalar radiation from black-hole binaries in a constant scalar-field gradient, and we compare our numerical findings to analytical models.
%U http://arxiv.org/abs/1304.2836