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

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 a...

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Bibliographic Details
Published in:arXiv.org 2021-11
Main Authors: Argüelles, Carlos R, Becerra-Vergara, Eduar A, Krut, Andreas, Yunis, Rafael, Rueda, Jorge A, Ruffini, Remo
Format: Article
Language:English
Subjects:
Cosmology
Dark matter
Decoupling
Fermions
Galactic halos
Gravitation
Initial conditions
Relativity
Supermassive black holes
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.2111.06199