PIRSA:13090073 Scientific Series Quantum Gravity

DOI10.48660/13090073

Series: Quantum Gravity

Dreyer, O. (2013). The World is Discrete. Perimeter Institute. https://pirsa.org/13090073

Dreyer, Olaf. The World is Discrete. Perimeter Institute, Sep. 19, 2013, https://pirsa.org/13090073 

@misc{ pirsa_PIRSA:13090073,
  doi = {10.48660/13090073},
  url = {https://pirsa.org/13090073},
  author = {Dreyer, Olaf},
  keywords = {Quantum Gravity},
  language = {en},
  title = {The World is Discrete},
  publisher = {Perimeter Institute},
  year = {2013},
  month = {sep},
  note = {PIRSA:13090073 see, \url{https://pirsa.org}}
}

Abstract

We argue that the scale-free spectrum that is observed in the cosmic microwave background is the result of a phase transition in the early universe.  The observed tilt of the spectrum, which has been measured to be 0.04, is shown to be equal to the anomalous scaling dimension of the correlation function.  The phase transition replaces inflation as the mechanism that produces this spectrum. The tilt further indicates that there is a fundamental small length scale in nature that we have not yet observed in any other way.

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