Self-similar kinetics for gravitational Bose-Einstein condensation
Fuente:
arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866908719442296832 |
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| author | Dmitriev, A. S. Levkov, D. G. Panin, A. G. Tkachev, I. I. |
| author_facet | Dmitriev, A. S. Levkov, D. G. Panin, A. G. Tkachev, I. I. |
| contents | We study an overpopulated gas of gravitationally interacting bosons surrounding a droplet of Bose-Einstein condensate - 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 slowly drifting scaling dimension. The latter new regime of adiabatic self-similarity can determine growth of dark matter Bose stars in cosmological models. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_02694 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Self-similar kinetics for gravitational Bose-Einstein condensation Dmitriev, A. S. Levkov, D. G. Panin, A. G. Tkachev, I. I. Cosmology and Nongalactic Astrophysics Quantum Gases Statistical Mechanics High Energy Physics - Phenomenology We study an overpopulated gas of gravitationally interacting bosons surrounding a droplet of Bose-Einstein condensate - 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 slowly drifting scaling dimension. The latter new regime of adiabatic self-similarity can determine growth of dark matter Bose stars in cosmological models. |
| title | Self-similar kinetics for gravitational Bose-Einstein condensation |
| topic | Cosmology and Nongalactic Astrophysics Quantum Gases Statistical Mechanics High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2509.02694 |