Gravothermalizing into primordial black holes, boson stars, and cannibal stars
Cosmic history between inflation and Big Bang nucleosynthesis remains largely unconstrained. The authors explore a novel scenario in which self-interacting particles driving early matter domination can form halos that undergo gravothermal collapse, leading to primordial black holes in the asteroid-mass range or exotic compact objects such as cannibal stars and boson stars. This unveils a new pathway for early universe structure formation with distinctive observable implications.
Authors
- Pranjal Ralegankar (ORCID: https://orcid.org/0000-0001-7696-5878)
- Daniele Perri (ORCID: https://orcid.org/0000-0001-5115-6687)
- Takeshi Kobayashi (ORCID: https://orcid.org/0000-0003-1722-3596)
Institutions
- Scuola Internazionale Superiore di Studi Avanzati (IT)
- Istituto Nazionale di Fisica Nucleare, Sezione di Trieste (IT)
- Institute for Fundamental Physics of the Universe (IT)
- University of Warsaw (PL)
Publication Details
- Journal
- Physical review. D/Physical review. D.
- Published
- 2025-08-29
- DOI
- https://doi.org/10.1103/xpwl-w5zk
- Citations
- 3
- Primary Topic
- Cosmology and Gravitation Theories
- Type
- article
- Field-Weighted Citation Impact
- 3.46