Spontaneous Scalarization of Black Holes and Compact Stars from a Gauss-Bonnet Coupling
Spontaneous Scalarization of Black Holes and Compact Stars from a Gauss-Bonnet Coupling
We identify a class of scalar-tensor theories with coupling between the scalar and the Gauss-Bonnet invariant that exhibit spontaneous scalarization for both black holes and compact stars. In particular, these theories formally admit all of the stationary solutions of general relativity, but these are not dynamically preferred if certain conditions …