Analytic description of primordial black hole formation from scalar field fragmentation

• Published in: Journal of cosmology and astroparticle physics Vol. 2019; no. 10; p. 77
• Main Authors: Cotner, Eric, Kusenko, Alexander, Sasaki, Misao, Takhistov, Volodymyr
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 31.10.2019; Institute of Physics (IOP)
• Subjects: Black holes; Cosmic microwave background; Dark matter; Flux density; Fragmentation; Large scale structure of the universe; Oscillons; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Scalars; Variation
• ISSN: 1475-7516; 1475-7516
• DOI: 10.1088/1475-7516/2019/10/077

Primordial black hole (PBH) formation is a more generic phenomenon than was once thought. The dynamics of a scalar field in inflationary universe can produce PBHs under mild assumptions regarding the scalar potential. In the early universe, light scalar fields develop large expectation values during...