Journal
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
Volume 53, Issue 3, Pages 911-920Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10773-013-1881-z
Keywords
Cosmology; Modified cosmic Chaplygin gas; Dark energy; Non-linear differential equation
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In this paper we study modified cosmic Chaplygin cosmology with non-zero cosmological constant in non-flat Universe. By using well-known forms of scale factor we obtain time-dependent dark energy density by numerical analysis of non-linear differential equation and fitting curves. We use observational data to fix solution and discuss about stability of our system. First of all we consider cosmological constant as a constant in Einstein equation, and then study possibility of variable cosmological constant.
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