PIRSA:10040109 Conference Cosmology

DOI10.48660/10040109

Conference/School: Fundamental Physics and Large Scale Structure (2010)

Creminelli, P. (2010). Galilean Genesis: an alternative to inflation. Perimeter Institute. https://pirsa.org/10040109

Creminelli, Paolo. Galilean Genesis: an alternative to inflation. Perimeter Institute, Apr. 29, 2010, https://pirsa.org/10040109 

@misc{ pirsa_PIRSA:10040109,
  doi = {10.48660/10040109},
  url = {https://pirsa.org/10040109},
  author = {Creminelli, Paolo},
  keywords = {Cosmology},
  language = {en},
  title = {Galilean Genesis: an alternative to inflation},
  publisher = {Perimeter Institute},
  year = {2010},
  month = {apr},
  note = {PIRSA:10040109 see, \url{https://pirsa.org}}
}

Abstract

I will discuss an alternative to inflation based on a Galileon field. The model starts in a (contracting or expanding) quasi Minkowski phase and all the energy of the Universe in generated suddenly in a sort of Genesis associated with a strong violation of the Null Energy Condition. The symmetries of the model force any additional scalar field to acquire a scale invariant spectrum of perturbations.

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