PIRSA:24050079 Scientific Series Quantum Gravity

DOI10.48660/24050079

Series: Quantum Gravity

Perez, A. (2024). Is Planckian discreteness observable in cosmology?. Perimeter Institute. https://pirsa.org/24050079

Perez, Alejandro. Is Planckian discreteness observable in cosmology?. Perimeter Institute, May. 16, 2024, https://pirsa.org/24050079 

@misc{ pirsa_PIRSA:24050079,
  doi = {10.48660/24050079},
  url = {https://pirsa.org/24050079},
  author = {Perez, Alejandro},
  keywords = {Quantum Gravity},
  language = {en},
  title = {Is Planckian discreteness observable in cosmology?},
  publisher = {Perimeter Institute},
  year = {2024},
  month = {may},
  note = {PIRSA:24050079 see, \url{https://pirsa.org}}
}

Abstract

A Planck scale inflationary era—in a quantum gravity theory predicting discreteness of quantum geometry at the fundamental scale—produces the scale invariant spectrum of inhomogeneities with very small tensor-to-scalar ratio of perturbations and a hot big bang leading to a natural dark matter genesis scenario. In this talk I evoke the possibility that some of the major puzzles in cosmology could have an explanation rooted in quantum gravity.

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