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Roman Pasechnik

Senior lecturer

Typical working day..

Ultralight bosons for strong gravity applications from simple Standard Model extensions

Author

  • Felipe F. Freitas
  • Carlos A.R. Herdeiro
  • António P. Morais
  • António Onofre
  • Roman Pasechnik
  • Eugen Radu
  • Nicolas Sanchis-Gual
  • Rui Santos

Summary, in English

We construct families, and concrete examples, of simple extensions of the Standard Model that can yield ultralight real or complex vectors or scalars with potential astrophysical relevance. Specifically, the mass range for these putative fundamental bosons (∼ 10-10-10-20 eV) would lead dynamically to both new non-black hole compact objects (bosonic stars) and new non-Kerr black holes, with masses of ∼ Mo˙ to ∼ 1010 Mo˙, corresponding to the mass range of astrophysical black hole candidates (from stellar mass to supermassive). For each model, we study the properties of the mass spectrum and interactions after spontaneous symmetry breaking, discuss its theoretical viability and caveats, as well as some of its potential and most relevant phenomenological implications linking them to the physics of compact objects.

Department/s

  • Theoretical Particle Physics

Publishing year

2021-12

Language

English

Publication/Series

Journal of Cosmology and Astroparticle Physics

Volume

2021

Issue

12

Document type

Journal article

Publisher

IOP Publishing

Topic

  • Subatomic Physics

Keywords

  • axions
  • gravity
  • massive stars
  • particle physics - cosmology connection

Status

Published

ISBN/ISSN/Other

  • ISSN: 1475-7516