MD or DM? Modified dynamics at low accelerations vs dark matter

Details MD or DM? Modified dynamics at low accelerations vs dark matter MD or DM? Modified dynamics at low accelerations vs dark matter

2011-01-26

arxiv.org/abs/1101.5122v1

Proceedings of Science PoS(HRMS)033 (2010)

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

16 pages. Talk at "Quarks, Strings and the Cosmos - H\'{e}ctor Rubinstein Memorial Symposium", August 2010 Stockholm

Scientific paper

The MOND paradigm posits a departure from standard Newtonian dynamics, and from General Relativity, in the limit of small accelerations. The resulting modified dynamics aim to account for the mass discrepancies in the universe without non-baryonic dark matter. I briefly review this paradigm with its basic tenets, and its underlying theories--nonrelativistic and relativistic--including a novel, bimetric MOND gravity theory. I also comment on MOND's possible connection to, and origin in, the cosmological state of the universe at large. Some of its main predictions, achievements, and remaining desiderata are listed. I then succinctly pit MOND against the competing paradigm of standard dynamics with cold, dark matter. (Abridged)

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