Stable accelerating universe with no hair
Pedro F. Gonzalez-Diaz
Abstract
After reviewing the main characteristics of the spacetime of accelerating universes driven by a quintessence scalar field with constant equation of state ω, we investigate in this paper the classical stability of such spaces to cosmological perturbations, particularizing in the case of a closed geometry and equation of state ω=-2/3. We conclude that this space is classically stable and conjecture that accelerating universes driven by quintessential fields have "no-hair".
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