Spontaneous scalarization

Nov 3, 2022
51 pages
Published in:
  • Rev.Mod.Phys. 96 (2024) 1, 015004
  • Published: Jan 1, 2024
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Abstract: (APS)
Scalarization is a mechanism that endows strongly self-gravitating bodies, such as neutron stars and black holes, with a scalar-field configuration. It resembles a phase transition in that the scalar configuration appears only when a certain quantity that characterizes the compact object, for example, its compactness or spin, is beyond a threshold. A critical and comprehensive review of scalarization, including the mechanism itself, theories that exhibit it, its manifestation in neutron stars, black holes and their binaries, potential extension to other fields, and a thorough discussion of future perspectives, is provided.
Note:
  • 51 pages, 24 figures. Review commissioned by Reviews of Modern Physics, submitted version, comments welcome. v2: more references, improved text, and typos corrected. Updated to match the published version
  • field theory: scalar
  • neutron star
  • black hole
  • binary
  • spin
  • critical phenomena
  • gravitation: self-force
  • hair: scalar
  • star: compact