HAL : hal-00352379, version 1

arXiv : 0901.1955

Code Bibliographique ADS : 2010PAN....73..222G

DOI : 10.1134/S1063778810020031

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Physics of Atomic Nuclei / Yadernaya Fizika 73, 2 (2010) 222-229

A discrete nonetheless remarkable brick in de Sitter: the "massless minimally coupled field"

J.-P. Gazeau1, A. Youssef1

(2010)

Over the last ten years interest in the physics of de Sitter spacetime has been growing very fast. Besides the supposed existence of a "de sitterian period" in inflation theories, the observational evidence of an acceleration of the universe expansion (interpreted as a positive cosmological constant or a "dark energy" or some form of "quintessence") has triggered a lot of attention in the physics community. A specific de sitterian field called "massless minimally coupled field" (mmc) plays a fundamental role in inflation models and in the construction of the de sitterian gravitational field. A covariant quantization of the mmc field, 'a la Krein-Gupta-Bleuler was proposed in [1]. In this talk, we will review this construction and explain the relevance of such a field in the construction of a massless spin 2 field in de Sitter space-time.

1 :	APC - AstroParticule et Cosmologie

équipe(s) de recherche : APC - THEORIE

Domaine

:

Physique/Relativité Générale et Cosmologie Quantique Physique/Physique des Hautes Energies - Théorie

Mots Clés : de Sitter – perturbative quantum gravity – massless minimally coupled

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Contributeur : Ahmed Youssef <>

Soumis le : Mardi 13 Janvier 2009, 01:57:03

Dernière modification le : Lundi 25 Juin 2012, 18:44:33