Abstract
To reconstruct dark energy models the redshift z eq , marking the end of radiation era and the beginning of matter-dominated era, can play a role as important as z t , the redshift at which deceleration parameter experiences a signature flip. To implement the idea we propose a variable equation of state for matter that can bring a smooth transition from radiation to matter-dominated era in a single model. A popular Λ∝ ρ dark energy model is chosen for demonstration but found to be unacceptable. An alternative Λ∝ ρ a 3 model is proposed and found to be more close to observation.
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Sil, A., Som, S. A better way to reconstruct dark energy models?. Astrophys Space Sci 318, 109–115 (2008). https://doi.org/10.1007/s10509-008-9892-6
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DOI: https://doi.org/10.1007/s10509-008-9892-6