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Dynamical scalar hair formation around a Schwarzschild black hole
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Scalar fields coupled to the Gauss-Bonnet invariant evade the known no-hair theorems and have nontrivial configurations around black holes. We focus on a scalar field that couples linearly to the Gauss-Bonnet invariant and hence exhibits shift symmetry. We study its dynamical evolution and the formation of scalar hair in a Schwarzschild background. We show that the evolution eventually settles to the known static hairy solutions in the appropriate limit.
Forward citations
Cited by 2 Pith papers
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Growing black-hole hair in nonminimally coupled biscalar gravity
Numerical simulations in the decoupling limit show that an axion and a dilaton form non-trivial hair around black holes in axi-dilaton gravity, with the kinetic coupling between the fields increasing the effect.
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Scalarization and descalarization in hyperbolic encounters of black holes
Numerical relativity in the decoupling limit reveals dynamical scalarization and spin-induced (de)scalarization during hyperbolic black hole encounters for both signs of the coupling.
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