Spontaneous scalarization of black holes and compact stars from a Gauss-Bonnet coupling

Silva, Hector O. and Sakstein, Jeremy and Gualtieri, Leonardo and Sotiriou, Thomas P. and Berti, Emanuele (2018) Spontaneous scalarization of black holes and compact stars from a Gauss-Bonnet coupling. Physical Review Letters, 120 (13). p. 131104. ISSN 0031-9007

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Abstract

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 are satisfied. Remarkably, black holes exhibit scalarization if their mass lies within one of many narrow bands. We find evidence that scalarization can occur in neutron stars as well.

Item Type: Article
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Mathematical Sciences
University of Nottingham, UK > Faculty of Science > School of Physics and Astronomy
Identification Number: 10.1103/PhysRevLett.120.131104
Depositing User: Eprints, Support
Date Deposited: 12 Apr 2018 10:00
Last Modified: 13 Apr 2018 14:57
URI: http://eprints.nottingham.ac.uk/id/eprint/51109

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