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The Oscillating Universe: an Alternative to Inflation

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arxiv gr-qc/9510041 v2 pith:PGKMC5BJ submitted 1995-10-19 gr-qc astro-ph

Ruth Durrer (Département de Physique Theorique , Université de Genève) , Joachim Laukenmann (Institut für Theoretische Physik , Universität Zürich) This is my paper · ORCID
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keywords universeentropyalternativeclosedcycleinflationoscillatingpower
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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.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Inflation after Curvature Bounce

    gr-qc 2024-12 reject novelty 4.0 of 10

    A closed-universe bounce model with a reconstructed scalar Lagrangian is presented and tuned to match Planck and BICEP/Keck constraints on the spectral index and tensor-to-scalar ratio.

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