Reshaping our understanding on structure formation with the quantum nature of the dark matter

Abstract

We study the non-linear structure formation in cosmology accounting for the quantum nature of the dark matter (DM) particles in the initial conditions at decoupling, as well as in the relaxation and stability of the DM halos. Differently from cosmological N-body simulations, we use a thermodynamic approach for collisionless systems of self-gravitating fermions in General Relativity, in which the halos reach the steady state by maximizing a coarse-grained entropy. We show the ability of this approach to provide answers to crucial open problems in cosmology, among others: the mass and nature of the DM particle, the formation and nature of supermassive black holes in the early Universe, the nature of the intermediate mass black holes in small halos, and the core-cusp problem.

arXiv comment16 pages, 7 figures. Accepted for pubblication in IJMPD. Invited plenary session talk at the 16th Marcel Grossmann Meeting

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Cited by in corpus (6)

• Fermionic Dark Matter: Physics, Astrophysics, and Cosmology
• Galaxy rotation curves and universal scaling relations: comparison between phenomenological and fermionic dark matter profiles
• On the growth of supermassive black holes formed from the gravitational collapse of fermionic dark matter cores
• Imaging fermionic dark matter cores at the center of galaxies
• Self-Interacting Dark Matter in Cosmology: accurate numerical implementation and observational constraints
• Accretion discs onto supermassive compact objects: a portal to dark matter physics in active galaxies