2017/11/30 by Hector O. Silva, Jeremy Sakstein, Leonardo Gualtieri +2 · 8 citations
Mathematics · Physics and Astronomy · #Astrophysics #Black hole (networking) #Classical mechanics #Cosmology and Gravitation Theories #Coupling (piping) #Coupling parameter #Einstein #Gamma-ray bursts and supernovae #Gauss #Gauss–Bonnet theorem #General relativity #Geometry #Invariant (physics) #Mathematical physics #Mathematics #Neutron star #Physics #Pulsars and Gravitational Waves Research #Pure mathematics #Quantum mechanics #Scalar (mathematics) #Stars #Tensor (intrinsic definition) #Theoretical physics #astro-ph.CO #gr-qc #hep-th
paper · pdf · doi:10.1103/physrevlett.120.131104
published as Phys. Rev. Lett. 120, 131104 (2018) · v2: Five pages, three figures. Minor corrections, references added. v3: Matches version published in Phys. Rev. Lett
arxiv created 2018/03/30 · openalex publication_date 2018/03/30 · arxiv updated 2018/04/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
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.