Semi-Classical Isotropization of the Universe during a de Sitter phase

Abstract

Semi-classical states for the Wheeler-DeWitt equation of a Bianchi type I model in the presence of a scalar field are analyzed. It is outlined how this scheme can effectively describe more general situations, where the curvature of the Bianchi type IX model and a proper potential term for the scalar field are present. The introduction of a cosmological constant term accounts for the quasi-isotropization mechanism which bridges the proposed framework with a late isotropic phase. This result makes the semi-classical Bianchi I model a plausible scenario for the Universe pre-inflationary phase.

6 pages, accepted for publication in Phys. Rev. D

References in corpus (4)

• Primordial Gravitational Waves and Cosmology
• Classical and Quantum Features of the Mixmaster Singularity
• Influence of scalar fields on the approach to a cosmological singularity
• Quasi-Isotropization of the Inhomogeneous Mixmaster Universe Induced by an Inflationary Process

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• On the emergence of a classical Isotropic Universe from a Quantum $f(R)$ Bianchi Cosmology in the Jordan Frame
• Bianchi I effective dynamics in Quantum Reduced Loop Gravity
• Quantum Gravity Corrections to the inflationary spectrum in a Bohmian approach