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- W1739975930 abstract "We have considered a cosmological model with a phenomenological model for the cosmological constant of the form $Lambda=btfr{ddot R}{R}$, $ bt$ is a constant. For age parameter consistent with observational data the Universe must be accelerating in the presence of a positive cosmological constant. The minimum age of the Universe is $H_0^{-1}$, where $H_0$ is the present Hubble constant. The cosmological constant is found to decrease as $t^{-2}$. Allowing the gravitational constant to change with time leads to an ever increasing gravitational constant at the present epoch. In the presence of a viscous fluid this decay law for $Lambda$ is equivalent to the one with $Lambda=3alpha H^2$ ($alpha=rm const.$) provided $alpha=fr{bt}{3(bt-2)}$. The inflationary solution obtained from this model is that of the de-Sitter type." @default.
- W1739975930 created "2016-06-24" @default.
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- W1739975930 date "1999-05-19" @default.
- W1739975930 modified "2023-09-27" @default.
- W1739975930 title "A model of an accelerating Universe" @default.
- W1739975930 hasPublicationYear "1999" @default.
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