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PIRSA:06040011

Video URL

https://pirsa.org/06040011

Accelerated expansion from structure formation

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

Syksy Rasanen

Talk numberPIRSA:06040011
DOI10.48660/06040011
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

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.