Comptes Rendus
The inflationary paradigm: predictions for CMB
[L'inflation et ses prédictions concernant le fond diffus]
Comptes Rendus. Physique, Volume 4 (2003) no. 8, pp. 935-943.

La recherche d'une explication causale des propriétés de l'univers aux grandes échelles suggère qu'une longue période d'expansion accélérée, appelée inflation, ait précédé la nucléo-synthèse primordiale. La première conséquence de l'inflation est que toutes les structures pré-existantes sont effacées. En effet, dans les modèles d'inflation les plus simples, les fluctuations de densité primordiales (les germes des structures de grandes échelles) résultent uniquement de l'amplification de fluctuations quantiques du vide. Les propriétés du spectre ainsi obtenu sont présentées et comparées avec les fluctuations de température dans le fond diffus. La correspondance est remarquable.

The search for a causal explanation of the large scale properties of the universe supports the idea that a long period of accelerated expansion, called inflation, preceded primordial nucleosynthesis. The first consequence of inflation is that all pre-existing classical structures are washed out. In fact, in the simplest inflationary models, the primordial density fluctuations (the seeds of the large scale structures) only result from the amplification of quantum vacuum fluctuations. The properties of the spectrum so obtained are presented and compared to the CMB temperature fluctuations. The agreement is striking.

Publié le :
DOI : 10.1016/S1631-0705(03)00100-2
Keywords: Inflation, Quantum field theory, Cosmic Microwave Background anisotropies, Cosmology, Early Universe
Mot clés : Inflation, Théorie quantique des champs, Anisotropies du fond de rayonnement cosmique, Cosmologie, Univers primordial

Renaud Parentani 1

1 Laboratoire de physique théorique, CNRS-UMR 8627, bât 210, Université de Paris XI, 91405 Orsay cedex, France
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Renaud Parentani. The inflationary paradigm: predictions for CMB. Comptes Rendus. Physique, Volume 4 (2003) no. 8, pp. 935-943. doi : 10.1016/S1631-0705(03)00100-2. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/S1631-0705(03)00100-2/

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