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Time-Dependent Density of Modified Cosmic Chaplygin Gas with Variable Cosmological Constant in Non-Flat Universe |
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| Authors: | J. Sadeghi B. Pourhassan M. Khurshudyan H. Farahani |
| Affiliation: | 1. Department of Physics, Ayatollah Amoli Branch, Islamic Azad University, P.O. Box 678, Amol, Iran 2. Young Researchers Club, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran 3. Department of Theoretical Physics, Yerevan State University, 1 Alex Manookian, 0025, Yerevan, Armenia |
| Abstract: | 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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