A stratified framework for scalar-tensor theories of Modified Dynamics

Details A stratified framework for scalar-tensor theories of Modified Dynamics A stratified framework for scalar-tensor theories of Modified Dynamics

1996-12-10

arxiv.org/abs/astro-ph/9612099v1

Astrophys.J. 480 (1997) 492-502

Astronomy and Astrophysics

Astrophysics

26 pages, 2 figures, aas style, ApJ (accepted)

Scientific paper

10.1086/303980

Although the modified dynamics (MOND) proposed by Milgrom successfully accounts for the systematics of galaxy rotation curves and cluster dynamics without invoking dark matter, the idea remains a largely ad hoc modification of Newtonian dynamics with no basis in deeper theory. Non-standard scalar-tensor theories have been suggested as a theoretical basis for MOND; however, any such theory with the usual conformal relation between the Einstein and physical metrics fails to predict the degree of light deflection observed in distant clusters of galaxies. In the present paper, I demonstrate that one can write down a framework for scalar-tensor theories which predict the MOND phenomenology for the low velocity (v<

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