Does Chaplygin gas have salvation?

@article{Campos2013DoesCG,
  title={Does Chaplygin gas have salvation?},
  author={J. Campos and J. Fabris and R. P{\'e}rez and O. Piattella and H. Velten},
  journal={The European Physical Journal C},
  year={2013},
  volume={73},
  pages={1-15}
}
We investigate the unification scenario provided by the generalized Chaplygin gas model (a perfect fluid characterized by an equation of state p=−A/ρα). Our concerns lie with a possible tension existing between background kinematic tests and those related to the evolution of small perturbations. We analyze data from the observation of the differential age of the universe, type Ia supernovae, baryon acoustic oscillations, and the position of the first peak of the angular spectrum of the cosmic… Expand
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