A mechanism for formation of Bose-Einstein condensation in cosmology
Abstract
We introduce a toy model of scalar particles with a trilinear scalar coupling in cosmology. The trilinear coupling phi2χ causes production of non-relativistic phi particles through the process χχ → phiphi where, initially, only relativistic χ particles are present. We consider the initial times of χχ → phiphi and observe that the curved space effects promote formation of Bose-Einstein condensate of phi particles.
- Publication:
-
Journal of Cosmology and Astroparticle Physics
- Pub Date:
- October 2019
- DOI:
- 10.1088/1475-7516/2019/10/061
- arXiv:
- arXiv:1908.08784
- Bibcode:
- 2019JCAP...10..061E
- Keywords:
-
- General Relativity and Quantum Cosmology;
- Astrophysics - Cosmology and Nongalactic Astrophysics;
- High Energy Physics - Phenomenology;
- High Energy Physics - Theory
- E-Print:
- Some technical details in the main text are moved to two appendices. Typos are fixed, and the presentation of the manuscript is improved