Work

Self-similar kinetics for gravitational Bose-Einstein condensation

Year: 2025

Type: article

Abstract: We study an overpopulated gas of gravitationally interacting bosons surrounding a droplet of Bose-Einstein condensate---the Bose star. We argue that kinetic evolution of this gas approaches with time a self-similar attractor solution to the kinetic equation. If the scale symmetry of the equation is broken by external conditions, the attractor solution exists, remains approximately self-similar, but has a slowly drifting scaling dimension. The latter new regime of adiabatic self-similarity can determine growth of dark matter Bose stars in cosmological models.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/52sq-jslx

Authors: A. S. Dmitriev, D. G. Levkov, A. G. Panin, I. I. Tkachev

Institutions: Institute for Nuclear Research, Novosibirsk State University

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Russian Science Foundation

Award: G7835985756