# Barotropic FRW cosmologies with Chiellini damping in comoving time

@article{Rosu2015BarotropicFC, title={Barotropic FRW cosmologies with Chiellini damping in comoving time}, author={H. Rosu and S. Mancas and P. Chen}, journal={Modern Physics Letters A}, year={2015}, volume={30}, pages={1550100} }

For nonzero cosmological constant Λ, 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, 882 (2015). This is due to the Ermakov equation which is obtained in this case. For zero cosmological constant, several textbook solutions are easily obtained as particular cases of our formulas and… Expand

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#### References

SHOWING 1-10 OF 12 REFERENCES

General and unified solution for perfect fluid homogeneous and isotropie cosmological models

- Physics
- 1988

Solutions generating technique for Abel-type nonlinear ordinary differential equations

- Mathematics
- 2001

The logarithmic solutions of the hypergeometric equation

- K. Dan. Vidensk. Selsk. Mat. Fys. Skr. 5
- 1963