The Effective Field Theory of nonsingular cosmology

@article{Cai2017TheEF,
  title={The Effective Field Theory of nonsingular cosmology},
  author={Yong Cai and Y. Wan and Hai-guang Li and Tao-tao Qiu and Yunsong Piao},
  journal={Journal of High Energy Physics},
  year={2017},
  volume={2017},
  pages={1-18}
}
A bstractIn this paper, we explore the nonsingular cosmology within the framework of the Effective Field Theory (EFT) of cosmological perturbations. Due to the recently proved no-go theorem, any nonsingular cosmological models based on the cubic Galileon suffer from pathologies. We show how the EFT could help us clarify the origin of the no-go theorem, and offer us solutions to break the no-go. Particularly, we point out that the gradient instability can be removed by using some spatial… Expand

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