PIRSA:12030103 Scientific Series Cosmology

DOI10.48660/12030103

Series: Cosmology and Gravitation

Vikman, A. (2012). G-Bounce. Perimeter Institute. https://pirsa.org/12030103

Vikman, Alexander. G-Bounce. Perimeter Institute, Mar. 19, 2012, https://pirsa.org/12030103 

@misc{ pirsa_PIRSA:12030103,
  doi = {10.48660/12030103},
  url = {https://pirsa.org/12030103},
  author = {Vikman, Alexander},
  keywords = {Cosmology},
  language = {en},
  title = {G-Bounce},
  publisher = {Perimeter Institute},
  year = {2012},
  month = {mar},
  note = {PIRSA:12030103 see, \url{https://pirsa.org}}
}

Abstract

I will discuss a wide class of models which realise a bounce in a spatially flat Friedmann universe in standard General Relativity. The key ingredient is a noncanonical, minimally coupled scalar field
belonging to the class of theories with Kinetic Gravity Braiding/Galileon-like self-couplings. In these models, the universe smoothly volves from contraction to expansion, suffering neither from ghosts
nor gradient instabilities around the turning point. The end-point of he evolution can be a standard radiation-domination era or an nflationary phase.
The talk is based on arXiv:1109.1047v2 [hep-th], JCAP11(2011)021.

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