On "Observational Constraints on Power-Law Cosmologies"
Meetu, Sethi · Annu, Batra · Daksh, Lohiya
Original · EN
"Power Law Cosmologies" are defined by their growth of the cosmological scale factor as tα regardless of the matter content or cosmological epoch. Constraints from the current age of the Universe and from the high redshift supernovae data require ``large'' α (≈ 1). We reinforce this by latest available observations. Such a large α is also consistent with the right amount of helium and the lowest observed metallicity in the universe for a model with the baryon entropy ratio ≈ 8.1× 10⁻⁹.
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