Perera, P. V. N. M. C.; Katugampala, K. D. W. J.
(International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
Since Perlmutter and Riess (1997; 1998) observed that the Universe expands with an acceleration, many models involving dark energy have been proposed to explain this phenomenon. A family of cosmological models with both ...