2003/02/28 by Alexander B. Balakin, Diego Pavon, Diego Pav n +2 · 1 citation
Physics and Astronomy · #Astrophysics #Black Holes and Theoretical Physics #Chaplygin gas #Classical mechanics #Cosmology #Cosmology and Gravitation Theories #Curvature #Dark energy #Dark matter #Geometry #Hubble's law #Kinetic energy #Physics #Relativity and Gravitational Theory #Tachyon #astro-ph #gr-qc #hep-ph
paper · pdf · doi:10.1088/1367-2630/5/1/385
published as New.J.Phys.5:85,2003 · 14 pages; references added, to appear in New Journal of Physics (v3)
arxiv created 2003/06/20 · openalex publication_date 2003/07/04 · arxiv updated 2016/08/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A curvature self-interaction of the cosmic gas is shown to mimic a cosmological constant or other forms of dark energy, such as a rolling tachyon condensate or a Chaplygin gas. Any given Hubble rate and deceleration parameter can be traced back to the action of an effective curvature force on the gas particles. This force self-consistently reacts back on the cosmological dynamics. The links between an imperfect fluid description, a kinetic description with effective antifriction forces and curvature forces, which represent a non-minimal coupling of gravity to matter, are established.