New Solutions for Evolution of the Scale Factor with a Variable Cosmological Term
Abstract
Description
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.
1 figure can be asked to the authors, 7 pages, AMStex
1 figure can be asked to the authors, 7 pages, AMStex