FRW Universe Models in Conformally Flat Spacetime Coordinates. I: General Formalism

Published 24 Mar 2011 in gr-qc | (1103.4743v1)

Abstract: The 3-space of a universe model is defined at a certain simultaneity. Hence space depends on which time is used. We find a general formula generating all known and also some new transformations to conformally flat spacetime coordinates. A general formula for the recession velocity is deduced.

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