Work

Nonlinear dark matter collapse under diffusion

Year: 2014

Type: article

Abstract: Diffusion is one of the physical processes allowed for describing the large scale dark matter dynamics. At the same time, it can be seen as a possible mechanism behind the interacting cosmologies. We study the nonlinear spherical ``top-hat'' collapse of dark matter which undergoes velocity diffusion into a solvent dark energy field. We show constraints on the maximum magnitude allowed for the dark matter diffusion. Our results reinforce previous analysis concerning the linear perturbation theory.

Source: Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields

DOI: 10.1103/physrevd.90.063524

Authors: Hermano E. S. Velten, Thiago R. P. Caramês

Institution: Universidade Federal do Espírito Santo

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2085081940

FWCI: 0.716

Cites: 13

Cited by: 5

Related to: 10