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Title: Ultralight bosons for strong gravity applications from simple Standard Model extensions
Author: Freitas, Felipe F.
Herdeiro, Carlos A.R.
Morais, António P.
Onofre, António
Pasechnik, Roman
Radu, Eugen
Sanchis-Gual, Nicolas
Santos, Rui
Keywords: Axions
Massive stars
Particle physics - cosmology connection
Issue Date: 21-Dec-2021
Publisher: IOP Publishing
Abstract: 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 ∼ M⊙to ∼ 1010 M⊙, 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.
Peer review: yes
DOI: 10.1088/1475-7516/2021/12/047
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