Dynamics of nonlocal cosmology

@article{Koivisto2008DynamicsON,
  title={Dynamics of nonlocal cosmology},
  author={T. Koivisto},
  journal={Physical Review D},
  year={2008},
  volume={77},
  pages={123513}
}
Nonlocal quantum corrections to gravity have been recently proposed as a possible solution to the cosmological fine-tuning problems. We study the dynamics of a class of nonlocal actions defined by the function of the inverse d'Alembertian of the Ricci scalar. Power-law and exponential functions are considered in detail, but we also show a method to reconstruct a nonlocal correction that generates a given background expansion. We find that even the simplest terms can, while involving only Planck… Expand
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