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

Abstract

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.

Proceedings of the XXVII Colloquium on Group Theoretical Methods in Physics, Yerevan, August 2008

References in corpus (6)

• Quantum Gravity in Everyday Life: General Relativity as an Effective Field Theory
• De Sitter Space and Eternity
• Cosmological Dark Energy: Prospects for a Dynamical Theory
• Causal Sets: Discrete Gravity (Notes for the Valdivia Summer School)
• Massive Spin-2 Field in De Sitter Space
• Massless scalar field in two-dimensional de Sitter universe

Cited by in corpus (4)

• The nature of $\Lambda$ and the mass of the graviton: A critical view
• Covariant and infrared-free graviton two-point function in de Sitter spacetime
• Covariant and infrared-free graviton two-point function in de Sitter spacetime II
• Krein Spaces in de Sitter Quantum Theories