Generalized Einstein Theory on Solar and Galactic Scales

Details Generalized Einstein Theory on Solar and Galactic Scales Generalized Einstein Theory on Solar and Galactic Scales

1992-11-09

arxiv.org/abs/astro-ph/9211007v1

Phys.Rev.D48:578-582,1993

Astronomy and Astrophysics

Astrophysics

13 pages, Latex, SLAC-PUB-5963

Scientific paper

10.1103/PhysRevD.48.578

We study a generalized Einstein theory with the following two criteria:{\it i}) on the solar scale, it must be consistent with the classical tests of general relativity, {\it ii}) on the galactic scale, the gravitational potential is a sum of Newtonian and Yukawa potentials so that it may explain the flat rotation curves of spiral galaxies. Under these criteria, we find that such a generalized Einstein action must include at least one scalar field and one vector field as well as the quadratic term of the scalar curvature.

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