Physical basis for the symmetries in the Friedmann–Robertson–Walker metric

  title={Physical basis for the symmetries in the Friedmann–Robertson–Walker metric},
  author={Fulvio Melia},
  journal={Frontiers of Physics},
  • F. Melia
  • Published 19 January 2016
  • Physics
  • Frontiers of Physics
Modern cosmological theory is based on the Friedmann–Robertson–Walker (FRW) metric. Often written in terms of co-moving coordinates, this well-known solution to Einstein’s equations owes its elegant and highly practical formulation to the cosmological principle and Weyl’s postulate, upon which it is founded. However, there is physics behind such symmetries, and not all of it has yet been recognized. In this paper, we derive the FRW metric coefficients from the general form of the spherically… 

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