2004/01/16 by M. Sharif
Physics and Astronomy · #gr-qc
published as Chin.J.Phys. 39 (2001) 236-242
arxiv created 2004/01/16 · arxiv updated 2009/12/01
Two models are given by crossing the Friedmann metrics with Schwarzschild and Kerr metrics. In these evolving universes with a gravitational source, the force four-vector and the corresponding potentials are evaluated.