Gravitational Cooling of Self-gravitating Bose Condensates
By F. S. Guzmán, Universitaria C P Morelia, México Michoacán, L. Arturo Ureña‐López. 2006
190 citations recorded by the source corpus.
Equilibrium configurations for a self-gravitating scalar field with self-interaction are constructed. The corresponding Schrödinger-Poisson (SP) system is solved using finite differences, assuming spherical symmetry. It is shown that equilibrium configurations of the SP system are late-time attractor solutions for initially quite arbitrary density profiles, which relax and virialize through the emission of scalar field bursts—a process dubbed gravitational cooling. Among other potential applications, these results indicate that scalar field dark matter models (in their different flavors) tolerate the introduction of a self-interaction term in the SP equations. This study can be useful in exploring models in which dark matter in galaxies is not pointlike.
Subfields: Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/9ef36273d2a2a609af4424508d2fa9d82ed1630c
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In Astronomy and Astrophysics
In Atomic and Molecular Physics, and Optics
Citations in the corpus
- The landscape of QCD axion models (2020, background): “The formation of axion stars might proceed either by gravitational cooling out of the virialised minicluster or during a process of violent relaxation [369, 375–377], leading to a solution in the weak gravity regime [378, 379], with the mass and the radius of the axion star being related by [371, 37”
- Axion dark matter, solitons and the cusp–core problem (2015, background): “An isolated system relaxes to the ground state via the emission of scalar waves to infinity, a process of ‘gravitational cooling’ (Seidel & Suen 1994; Guzmán & Ureña-López 2006).”