Robertson-Walker
Metric
•Homogeneous and Isotropic
universe is described geometrically by a metric, or line element,
in GR, for “pressureless dust”.
•A nice webpage about the
Friedman equation and the Robertson-Walker Metric: http://www.jb.man.ac.uk/~jpl/cosmo/friedman.html
•Textbook
(Combes) is alternatively light and heavy on these topics. Anyway, R-W metric: