New Solutions for Evolution of the Scale Factor with a Variable Cosmological Term
Carlos Pinheiro, F. C. Khanna
Abstract
The cosmological term is assumed to be a function of time such as Λ=Ba-2 where a(t) means the scale factor of standard cosmology. Analytical solutions for radiation dominated epoch and open universe are found. For closed universe, k=+1, and for flat universe, k=0, we show a numerical solution. In general the scenario of Big Bang is preserved in our case for the Friedmann-Robertson-Walker cosmology.
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