Abstract
We construct the energy-momentum tensor in Minkowskian space-time for Einstein's collisionless system of test particles moving in concentric circles and obtain the four-force necessary to preserve equilibrium. We derive a tensor field, satisfying the linearized Einstein equations, which is consistent with the applied four-force. If the particles are contained within a sphere, then outside the sphere we show that the tensor field is a linearized Schwarzschild fieldwith a cosmological constant (this constant being the “potential energy” calculated on the surface of the sphere).
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Hogan, P.A. A reconstruction in Minkowskian space-time of Einstein's assembly of test particles. Gen Relat Gravit 9, 1021–1030 (1978). https://doi.org/10.1007/BF00784662
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DOI: https://doi.org/10.1007/BF00784662