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The oscillating universe : an alternative to inflation

Laukenmann, Joachim
Published in Classical and Quantum Gravity. 1996, vol. 13, p. 1069-1087
Abstract 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.
Stable URL http://archive-ouverte.unige.ch/unige:1003
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Deposited on : 2009-02-26

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