Friedmann-Robertson-Walker Models with Late-Time Acceleration

Abdussattar; S R Prajapati

doi:10.1088/0256-307x/28/2/029803

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arXiv · 1604.03804

Friedmann-Robertson-Walker Models with Late-Time Acceleration

Abdussattar·S R Prajapati

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Abstract

In order to account for the observed cosmic acceleration, a modification of the ansatz for the variation of density in Friedman-Robertson-Walker (FRW) models given by Islam is proposed. The modified ansatz leads to an equation of state which corresponds to that of a variable Chaplygin gas, which in the course of evolution reduces to that of a modified generalized Chaplygin gas (MGCG) and a Chaplygin gas (CG), exhibiting late-time acceleration.

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Abdussattar, S R Prajapati. 2016-04-11. Friedmann-Robertson-Walker Models with Late-Time Acceleration. https://doi.org/10.1088/0256-307x%2F28%2F2%2F029803

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