Matter-Dominated Era

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The Matter-Dominated Era is the era in which we currently reside within our universe, as opposed to the Radiation-Dominated Era. In the Matter-Dominated Era, the energy density of matter exceeds the energy density of radiation in the universe. [1]

For a matter dominated universe the evolution of the scale factor in the Friedmann-Lemaitre-Robertson-Walker metric is easily obtained solving the Friedmann equations:

a(t)\propto t^{2/3}

[edit] References

  1. ^ Zelik, M and Gregory, S: "Introductory Astronomy & Astrophysics", page 497. Thompson Learning, Inc. 1998


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