Scientific article
Open access

The oscillating universe : an alternative to inflation

Published inClassical and quantum gravity, vol. 13, p. 1069-1087
Publication date1996

The aim of this paper is to show, that the 'oscillating universe' is a viable alternative to inflation. We remind that this model provides a natural solution to the flatness or entropy and to the horizon problem of standard cosmology. We study the evolution of density perturbations and determine the power spectrum in a closed universe. The results lead to constraints of how a previous cycle might have looked like. We argue that most of the radiation entropy of the present universe may have originated from gravitational entropy produced in a previous cycle. We show that measurements of the power spectrum on very large scales could in principle decide whether our universe is closed, flat or open.

Citation (ISO format)
DURRER, Ruth, LAUKENMANN, Joachim. The oscillating universe : an alternative to inflation. In: Classical and quantum gravity, 1996, vol. 13, p. 1069–1087. doi: 10.1088/0264-9381/13/5/021
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Article (Accepted version)
ISSN of the journal0264-9381

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