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Field Flows of Dark Energy
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Scalar field dark energy evolving from a long radiation- or matter-dominated epoch has characteristic dynamics. While slow-roll approximations are invalid, a well defined field expansion captures the key aspects of the dark energy evolution during much of the matter-dominated epoch. Since this behavior is determined, it is not faithfully represented if priors for dynamical quantities are chosen at random. We demonstrate these features for both thawing and freezing fields, and for some modified gravity models, and unify several special cases in the literature.
Forward citations
Cited by 2 Pith papers
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Higher-Order Analytical Expansion of Thawing Dark Energy with an Exponential Potential
For exponential-potential quintessence, a new fourth-order analytic correction, including a background expansion correction, improves the predicted dark energy equation of state compared with the leading-order thawing...
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Extended Dark Energy analysis using DESI DR2 BAO measurements
Extended analysis of DESI DR2 data confirms robust evidence for dynamical dark energy with phantom crossing preference, stable under parametric and non-parametric modeling.
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