[L'inflation et ses prédictions concernant le fond diffus]
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.
Mot clés : Inflation, Théorie quantique des champs, Anisotropies du fond de rayonnement cosmique, Cosmologie, Univers primordial
@article{CRPHYS_2003__4_8_935_0,
author = {Renaud Parentani},
title = {The inflationary paradigm: predictions for {CMB}},
journal = {Comptes Rendus. Physique},
pages = {935--943},
publisher = {Elsevier},
volume = {4},
number = {8},
year = {2003},
doi = {10.1016/S1631-0705(03)00100-2},
language = {en},
}
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/
[1] Gravitation and Cosmology, J. Wiley & Sons, New York, 1972
[2] Principles of Physical Cosmology, Princeton University Press, Princeton, 1993
[3] Theory of cosmological perturbations, Phys. Rep., Volume 215 (1992), p. 203
[4] The cosmological constant and dark energy, Rev. Mod. Phys., Volume 75 (2003), p. 599
[5] et al. First year WMAP observations | arXiv
[6] et al. Primordial nucleosynthesis: Theory and observations, Phys. Rep., Volume 333 (2000), p. 389
[7] Primordial nucleosynthesis in the light of WMAP | arXiv
[8] Cosmological perturbation theory and structure formation | arXiv
[9] Phys. Rev. D, 65 (2002), p. 021301
[10] et al. First year WMAP observations, implications for inflation | arXiv
[11] The inflationary universe: A possible solution to the horizon and flatness problems, Phys. Rev. D, Volume 23 (1981), p. 347
[12] A new inflationary universe scenario: a possible solution of the horizon, flatness, homogeneity, isotropy and primordial monopole problems, Phys. Lett. B, Volume 108 (1982), p. 389
[13] JEPT Lett., 33 (1981), p. 532 (see also) | arXiv
[14] Particle Physics and Inflationary Cosmology, Harwood Academic, Chur, 1990
[15] et al. Structure of resonance in preheating after inflation, Phys. Rev. D, Volume 56 (1997), p. 6175
[16] Cosmological Inflation and Large-Scale Structure, Cambridge University Press, 2000
[17] A new type of isotropic cosmological models without singularity, Phys. Lett. B, Volume 91 (1980), p. 99
[18] Principles, progress and problems in inflationary cosmology, AAPPS Bull., Volume 11 (2001), p. 20
[19] C. R. Physique, 4 (2003) (this issue)
[20] Quantum Fields in Curved Space, Cambridge University Press, Cambridge, 1982
[21] Gravitation, Freeman, San Fransisco, 1973
[22] Particle creation by black holes, Commun. Math. Phys., Volume 43 (1975), p. 199
[23] et al. A primer of black hole quantum physics, Phys. Rep., Volume 260 (1995), p. 329
[24] Prog. Theor. Phys. (Suppl.), 136 (1999), p. 1
[25] Phys. Rev. D, 63 (2001), p. 123501 (see also) | arXiv
[26] Phys. Rev. D, 64 (2001), p. 101301
[27] Phys. Rev. D, 50 (1994), p. 7154
[28] CMB temperature and polarization anisotropy fundamentals, Ann. Phys., Volume 303 (2003), p. 203
[29] et al. Reconstructing the inflaton potential—an overview, Rev. Mod. Phys., Volume 69 (1997), p. 373
[30] Non-Gaussianity in multi-field inflation, Phys. Rev. D, Volume 66 (2002), p. 103506
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