Abstract
In the usual curved-space description of gravity, a class of fields is defined which correspond to the fields of Newtonian gravitational theory. Using these fields, the field equations of Newtonian theory are formulated in a four-dimensional metric space. The equations are then modified so that they transform properly under the Lorentz transformation and so that their weak-field approximation is closely analogous to the equations of classical electrodynamics. The resulting equations lead to Newtonian theory in the non-relativistic limit, and they lead rigorously to the Schwarzschild field and to the known relativistic corrections associated with it. Finally, these field equations are compared with Einstein's field equations.
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References
Havas, Peter (1964). Four-Dimensional Formulations of Newtonian Mechanics and Their Relation to the Special and the General Theory of Relativity.Reviews of Modern Physics, Vol. 36, No. 4 (October, 1964), p. 938.
Kirkwood, Robert L. (1970). Lorentz Invariance in a Gravitational Field.Journal of Mathematical Physics, Vol. 11, No. 10 (October, 1970), p. 2983.
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Kirkwood, R.L. A metric-space formulation of Newtonian fields. Int J Theor Phys 6, 133–153 (1972). https://doi.org/10.1007/BF00670425
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DOI: https://doi.org/10.1007/BF00670425