PIRSA:06040011 Scientific Series Cosmology

DOI10.48660/06040011

Series: Cosmology and Gravitation

Rasanen, S. (2006). Accelerated expansion from structure formation. Perimeter Institute. https://pirsa.org/06040011

Rasanen, Syksy. Accelerated expansion from structure formation. Perimeter Institute, Apr. 11, 2006, https://pirsa.org/06040011 

@misc{ pirsa_PIRSA:06040011,
  doi = {10.48660/06040011},
  url = {https://pirsa.org/06040011},
  author = {Rasanen, Syksy},
  keywords = {Cosmology},
  language = {en},
  title = {Accelerated expansion from structure formation},
  publisher = {Perimeter Institute},
  year = {2006},
  month = {apr},
  note = {PIRSA:06040011 see, \url{https://pirsa.org}}
}

Abstract

I discuss the backreaction of inhomogeneities on the expansion of the universe. The average behaviour of an inhomogeneous spacetime is not given by the Friedmann-Robertseon-Walker equations. The new terms in the exact equations hold the possibility of explaining the observed acceleration without a cosmological constant or new physics. In particular, the coincidence problem may be solved by a connection with structure formation.

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