Extreme parameter sensitivity in quasidilaton massive gravity

@article{Anselmi2015ExtremePS,
  title={Extreme parameter sensitivity in quasidilaton massive gravity},
  author={Stefano Anselmi and Diana L'opez Nacir and Glenn Starkman},
  journal={Physical Review D},
  year={2015},
  volume={92},
  pages={084033}
}
  • Stefano Anselmi, Diana L'opez Nacir, Glenn Starkman
  • Published 2015
  • Physics
  • Physical Review D
  • We reanalyze the behavior of Friedmann-Lema\^itre-Robertson-Walker cosmologies in the recently proposed quasidilaton massive-gravity model, and discover that the background dynamics present hitherto unreported features that require unexpected fine-tuning of the additional fundamental parameters of the theory for an observationally consistent background cosmology. We also identify new allowed regions in the parameters space and exclude some of the previously considered ones. The evolution of the… CONTINUE READING

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