A Time varying speed of light as a solution to cosmological puzzles

@article{Albrecht1999ATV,
  title={A Time varying speed of light as a solution to cosmological puzzles},
  author={Andreas Albrecht and Jo{\~a}o Magueijo},
  journal={Physical Review D},
  year={1999},
  volume={59},
  pages={043516}
}
We consider the cosmological implications of light travelling faster in the early Universe. We propose a prescription for deriving corrections to the cosmological evolution equations while the speed of light $c$ is changing. We then show how the horizon, flatness, and cosmological constant problems may be solved. We also study cosmological perturbations in this scenario and show how one may solve the homogeneity and isotropy problems. As it stands, our scenario appears to most easily produce… 

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