@article{84a8bbc5ad7c4647bf0f130ef8514a2f,
title = "Spontaneous scalarization of black holes and compact stars from a Gauss-Bonnet coupling",
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.",
author = "Silva, \{Hector O.\} and Jeremy Sakstein and Leonardo Gualtieri and Sotiriou, \{Thomas P.\} and Emanuele Berti",
note = "We thank Andrea Maselli, Caio F. B. Macedo, Helvi Witek, Paolo Pani, Kent Yagi, and Nicol\textbackslash{}u00E1s Yunes for numerous discussions. This work was supported by the H2020-MSCA-RISE-2015 Grant No. StronGrHEP-690904 and by the COST action CA16104 \textbackslash{}u201CGWverse.\textbackslash{}u201D H. O. S. was supported by NSF Grant No. PHY-1607130 and NASA Grants No. NNX16AB98G and No. 80NSSC17M0041. J. S. was supported by funds provided to the Center for Particle Cosmology by the University of Pennsylvania. E. B. was supported by NSF Grants No. PHY-1607130 and No. AST-1716715. T. P. S. received funding from the European Research Council under the European Union\textbackslash{}u2019s Seventh Framework Programme (FP7/2007\textbackslash{}u20132013)/ERC Grant agreement No. 306425 \textbackslash{}u201CChallenging General Relativity.\textbackslash{}u201D Note added.\textbackslash{}u2014Recently, a preprint studying a similar model with BH spontaneous scalarization appeared in Ref. [50] and a study of evasions of no-hair theorems in SGB appeared in Ref. [51]. We thank Andrea Maselli, Caio F. B. Macedo, Helvi Witek, Paolo Pani, Kent Yagi, and Nicol\textbackslash{}u00E1s Yunes for numerous discussions. This work was supported by the H2020-MSCA-RISE-2015 Grant No. StronGrHEP-690904 and by the COST action CA16104 \textbackslash{}u201CGWverse.\textbackslash{}u201D H. O. S. was supported by NSF Grant No. PHY-1607130 and NASA Grants No. NNX16AB98G and No. 80NSSC17M0041. J. S. was supported by funds provided to the Center for Particle Cosmology by the University of Pennsylvania. E. B. was supported by NSF Grants No. PHY-1607130 and No. AST-1716715. T. P. S. received funding from the European Research Council under the European Union's Seventh Framework Programme (FP7/2007-2013)/ERC Grant agreement No. 306425 \textbackslash{}u201CChallenging General Relativity.\textbackslash{}u201D",
year = "2018",
month = mar,
day = "30",
doi = "10.1103/PhysRevLett.120.131104",
language = "English (US)",
volume = "120",
journal = "Physical review letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "13",
}