Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2002-05-24
Int.J.Mod.Phys. A17 (2002) 4203-4208
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
LaTeX, 6 pages, one figure. Text of a talk at the 5th Friedmann International Seminar on Gravitation and Cosmology, Joao Pesso
Scientific paper
10.1142/S0217751X0201323X
The motivations for investigating a theory of gravitation based on a concept of "ether" are discussed-- a crucial point is the existence of an alternative interpretation of special relativity, named the Lorentz-Poincar\'e ether theory. The basic equations of one such theory of gravity, based on just one scalar field, are presented. To check this theory in celestial mechanics, an "asymptotic" scheme of post-Newtonian (PN) approximation is summarized and its difference with the standard PN scheme is emphasized. The derivation of PN equations of motion for the mass centers, based on the asymptotic scheme, is outlined. They are implemented for the major bodies of the solar system and the prediction for Mercury is compared with an ephemeris based on general relativity.
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