Slow-roll Extended Quintessence

Abstract

We derive the slow-roll conditions for a non-minimally coupled scalar field (extended quintessence) during the radiation/matter dominated era extending our previous results for thawing quintessence. We find that the ratio $\ddot{\varphi }/3H\dot{\varphi }$ becomes constant but negative, in sharp contrast to the ratio for the minimally coupled scalar field. We also find that the functional form of the equation of state of the scalar field asymptotically approaches that of the minimally coupled thawing quintessence.

11 pages, 4 figures, references added, to appear in Phys. Rev. D

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Cited by in corpus (13)

• Cosmology and Fundamental Physics with the Euclid Satellite
• Cosmology and fundamental physics with the Euclid satellite
• Cosmic expansion and growth histories in Galileon scalar-tensor models of dark energy
• Selected topics in scalar-tensor theories and beyond
• Dark Energy in Practice
• Cosmological constraints on induced gravity dark energy models
• Zero-point quantum fluctuations in cosmology
• A one-parameter formula for testing slow-roll dark energy: observational prospects
• Properties and uncertainties of scalar field models of dark energy with barotropic equation of state
• Thawing in a coupled quintessence model
• Probing Quintessence Potential with Future Cosmological Surveys
• Q-balls Formation and the Production of Gravitational Waves With Non-minimal Gravitational Coupling
• Warm constant-roll inflation in brane-world cosmology