2006/01/01 by Antonio L. Maroto · 1 citation
Earth and Planetary Sciences · Physics and Astronomy · #Astrophysics #Classical mechanics #Cosmic microwave background #Cosmology #Cosmology and Gravitation Theories #Dark energy #Dark fluid #Dark matter #Energy (signal processing) #Energy flow #Geophysics and Gravity Measurements #Observable #Physics #Quantum mechanics #Rest (music) #Rest frame #Scalar field dark matter #Solar and Space Plasma Dynamics #astro-ph
paper · pdf · doi:10.1063/1.2409093
published as AIPConf.Proc.878:240-246,2006 · 7 pages, 2 figures. Contribution to the Proceedings of the International Workshop The Dark Side of the Universe, Madrid, June 20-24, 2006
openalex publication_date 2006/01/01 · arxiv created 2006/09/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
If dark energy can be described as a perfect fluid, then, apart from its equation of state relating energy density and pressure, we should also especify the corresponding rest frame. Since dark energy is typically decoupled from the rest of components of the universe, in principle such a frame could be different from that of matter and radiation. In this work we consider the potential observable effects of the motion of dark energy and the possibility to measure the dark energy velocity relative to matter. In particular we consider the modification of the usual interpretation of the CMB dipole and its implications for the determination of matter bulk flows on very large scales. We also comment on the possible origin of a dark energy flow and its evolution in different models.