Cosine problem in EPRL/FK spinfoam model

@article{Vojinovic2013CosinePI,
  title={Cosine problem in EPRL/FK spinfoam model},
  author={M. Vojinovic},
  journal={General Relativity and Gravitation},
  year={2013},
  volume={46},
  pages={1-35}
}
  • M. Vojinovic
  • Published 2013
  • Physics, Mathematics
  • General Relativity and Gravitation
  • We calculate the classical limit effective action of the EPRL/FK spinfoam model of quantum gravity coupled to matter fields. By employing the standard QFT background field method adapted to the spinfoam setting, we find that the model has many different classical effective actions. Most notably, these include the ordinary Einstein–Hilbert action coupled to matter, but also an action which describes antigravity. All those multiple classical limits appear as a consequence of the fact that the… CONTINUE READING
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