Browsing by Author "Katugampola, K. D. W. J."

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    Expanding universe with a time-dependent cosmological constant
    (4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019) Jayawardane, S.; Katugampola, K. D. W. J.; Hewageegana, P.
    It is possible to examine the expansion of universe with an accelerating epoch. The prophecy of an expanding universe from Einstein's Field Equations were affirmed by the perceptions of Edwin Hubble and Adam G. Reises in mid twentieth century. Late perceptions of Saul Perlmutter on expansion of the universe with an increasing speed in a specific epoch has awakened the search for new cosmological models that reflect universe expansion with an acceleration