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arXiv · 1502.07033

Barotropic FRW cosmologies with Chiellini damping in comoving time

Haret C. Rosu·Stefan C. Mancas·Pisin Chen
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Abstract

For non-zero cosmological constant Lambda, we show that the barotropic FRW cosmologies as worked out in the comoving time lead in the radiation-dominated case to scale factors of identical form as for the Chiellini dissipative scale factors in conformal time obtained recently by us in Phys. Lett. A 379 (2015) 882-887. This is due to the Ermakov equation which is obtained in this case. For zero cosmological constant, several textbook solutions are provided as particular cases of Lambda different from zero.

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Haret C. Rosu, Stefan C. Mancas, Pisin Chen. 2015-03-16. Barotropic FRW cosmologies with Chiellini damping in comoving time. https://doi.org/10.1142/s021773231550100x

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