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PARAMETRIZATION OF THE DARK ENERGY EQUATION OF STATE
2007
International Journal of Modern Physics D
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A comparative study of various parametrizations of the dark energy equation of state is made. Astrophysical constraints from LSS, CMB and BBN are laid down to test the physical viability and cosmological compatibility of these parametrizations. A critical evaluation of the 4-index parametrizations reveals that Hannestad-Mörtsell as well as Lee parametrizations are simple and transparent in probing the evolution of the dark energy during the expansion history of the universe and they satisfy the
doi:10.1142/s0218271807010973
fatcat:nbfgoot2abd6xefkq3grfrscdu