Dark radiation from a unified dark fluid model

2013/06/30 by Chao-Qiang Geng, C.-Q. Geng, Lu-Hsing Tsai +3
Physics and Astronomy · #Astronomy and Astrophysical Research #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark energy #Dark fluid #Dark matter #Dark radiation #Hot dark matter #Mixed dark matter #Scalar field dark matter #astro-ph.CO #hep-ph

paper · pdf · doi:10.1093/ptep/ptu072

published in Progress of Theoretical and Experimental Physics 2014(6), 63E01-0 (University of Oxford) · 12 pages, 4 figures, revised version accepted by PTEP

arxiv created 2014/05/07 · openalex publication_date 2014/06/11 · arxiv updated 2014/06/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We present a unified dark fluid model to describe the possible evolutionary behavior of |Δ N_\mathrm eff| in dark radiation. This model can be viewed as an interacting model for the dark sectors, in which dark matter interacts with dark radiation. We show that the evolution of |Δ N_\mathrm eff| can be nicely explained without some drawbacks, such as the blowup of |Δ N_\mathrm eff| and the non-vanishing interaction at the late time.

Citations

• Dark matter, dark energy, and dark radiation coupled with a transversal interaction
• Generalized Chaplygin gas, accelerated expansion, and dark-energy-matter unification
• Dark matter with invisible light from heavy double charged leptons of almost-commutative geometry?