Environment-dependent dark sector

2009/04/30 by Baojiu Li, Hongsheng Zhao
Physics and Astronomy · #Astrophysics #Cold dark matter #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark energy #Dark fluid #Dark matter #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy formation and evolution #Galaxy rotation curve #Hot dark matter #Mixed dark matter #Modified Newtonian dynamics #Physics #Scalar field dark matter #astro-ph.CO #astro-ph.HE #gr-qc #hep-ph

paper · pdf · doi:10.1103/physrevd.80.064007

published as Phys.Rev.D80:064007,2009 · 1 table, no figures; more on dark energy and slightly reorganized

arxiv created 2009/05/11 · openalex publication_date 2009/09/03 · arxiv updated 2012/07/04 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We propose a new framework unifying cold dark matter (CDM) and modified Newtonian dynamics (MOND) to solve their respective problems on galactic scales and large scale structure formation. In our framework the dark matter clusters on large scales but not on galactic scales. This environment dependence of the dark matter behaviors is controlled by a vector field, which also produces the MOND effects in galaxies. We find that in this framework only a single mass scale needs to be introduced to produce the phenomena of CDM, MOND, and also dark energy.

Citations

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• A modification of the Newtonian dynamics - Implications for galaxies
• A modification of the Newtonian dynamics as a possible alternative to the hidden mass hypothesis
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• Dwarf spheroidals in MOND
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• A tensor--vector--scalar framework for modified dynamics and cosmic dark matter
• A Modification of the Newtonian Dynamics - Implications for Galaxy Systems