Do physicists know what the expansion rate of the Universe was at the beginning of the matter dominated era?


marked as duplicate by John Rennie, Danu, ACuriousMind, Kyle Kanos, Qmechanic Nov 21 '14 at 16:19

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  • $\begingroup$ Are you familiar with standard computations in cosmology involving e.g. the Friedmann equations? $\endgroup$ – Danu Nov 20 '14 at 20:52
  • $\begingroup$ I am familiar with the Friedman equations, but not calculating with them. I was just curious if there was a consensus regarding what the expansion rate was at the radiation/matter transition and matter/dark energy transition. $\endgroup$ – Chris L. Nov 20 '14 at 21:02
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    $\begingroup$ many books on cosmology and/or GR (e.g. Carroll's book on GR) discuss these matters. Have a look around (outside Wikipedia ;) ). $\endgroup$ – Danu Nov 20 '14 at 21:20
  • $\begingroup$ When you ask for the expansion rate, are you asking for the Hubble constant? $\endgroup$ – Ben Crowell Nov 20 '14 at 22:19
  • $\begingroup$ @BenCrowell: yes, the Hubble constant $\endgroup$ – Chris L. Nov 20 '14 at 23:20