@article{carroll2004,
  title={Is cosmic speed-up due to new gravitational physics?},
  author={Sean M. Carroll and Vikram Duvvuri and Mark Trodden and Michael S. Turner},
  year={2004},
  journal={Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields},
  doi={10.1103/physrevd.70.043528},
  url={https://doi.org/10.1103/physrevd.70.043528}
}