Generalized Chaplygin gas with $\alpha =0$ and the $\Lambda CDM$ cosmological model

J. C. Fabris, S. V. B. Gonçalves, R. de Sá Ribeiro

The generalized Chaplygin gas model is characterized by the equation of state $p=-\frac{A}{{\rho }^{\alpha }}$. It is generally stated that the case $\alpha =0$ is equivalent to a model with cosmo…