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General Relativity and Quantum Cosmology, gr-qc,High Energy Physics - Theory, hep-th
Abstract:
Scalar fields coupled to the Gauss-Bonnet invariant can undergo a tachyonic
instability, leading to spontaneous scalarization of black holes. Studies of
this effect have so far been restricted to single black hole spacetimes. We
present the first results on dynamical scalarization in head-on collisions and
quasi-circular inspirals of black hole binaries with numerical relativity
simulations. We show that black hole binaries can either form a scalarized
remnant or dynamically descalarize by shedding off its initial scalar hair. The
observational implications of these finding are discussed.
