The Post-Newtonian Limit of Dilaton Gravity

Details The Post-Newtonian Limit of Dilaton Gravity The Post-Newtonian Limit of Dilaton Gravity

1995-12-28

arxiv.org/abs/hep-th/9512207v1

Chin.J.Phys. 34 (1996) 1285-1297

Physics

High Energy Physics

High Energy Physics - Theory

22 pages, use Latex

Scientific paper

We study the post-Newtonian limit of a generalized dilaton gravity in which gravity is coupled to dilaton and eletromagnetic fields. The field equations are derived using the post-Newtonian scheme, and the approximate solution is presented for a point mass with electric and dilaton charges. The result indicates that the dilaton effect can be detected, in post-Newtonian level, using a charged test particle but not a neutral one. We have also checked that the approximate solution is indeed consistent with the weak field expansion of charged dilaton black hole solution in the harmonic coordinate.

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