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The Dynamics of Quintessence, The Quintessence of Dynamics

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arxiv 0704.2064 v2 pith:7FX2OJZG submitted 2007-04-16 astro-ph

classification astro-ph
keywords dynamicsquintessencefieldsphysicalabilityaccelerationbehaviorsclassifications
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Quintessence theories for cosmic acceleration imbue dark energy with a non-trivial dynamics that offers hope in distinguishing the physical origin of the component. We review quintessence models with an emphasis on this dynamics and discuss classifications of the different physical behaviors. The pros and cons of various parameterizations are examined as well as the extension from scalar fields to other modifications of the Friedmann expansion equation. New results on the ability of cosmological data to distinguish among and between thawing and freezing fields are presented.

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Cited by 9 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Breaking the Dark Sector Degeneracy with Nonparametric Expansion--Growth Reconstruction

    astro-ph.CO 2026-07 unverdicted novelty 6.0 of 10

    Joint nonparametric expansion–growth reconstruction finds no significant dark-sector interaction or dark-energy dynamics, remaining consistent with ΛCDM over 0≲z≲2.

  2. Beyond the equation of state: a second-order diagnostic for dynamical dark energy

    gr-qc 2026-06 unverdicted novelty 6.0 of 10

    Introduces curvature diagnostic C = ρ_DE''/ρ_DE for two-fluid interacting dark energy models that isolates ω_DE' independently of interaction strength α and recovers it in CPL parametrization consistent with DESI data.

  3. BAO miscalibration cannot rescue late-time solutions to the Hubble tension

    astro-ph.CO 2025-10 accept novelty 6.0 of 10

    Even after rescaling BAO data to prefer H0≈73 km/s/Mpc, none of six tested late-time dark-energy models can resolve the Hubble tension once unanchored SNeIa and CMB geometry are included.

  4. Physical vs phantom dark energy after DESI: thawing quintessence in a curved background

    astro-ph.CO 2025-04 conditional novelty 6.0 of 10

    Curved thawing quintessence models fit DESI DR2 BAO, CMB, and Pantheon+ data as well as the flat w0-wa parametrization, so phantom crossing is model-dependent rather than required.

  5. The Goldstone Awakens: Unimodular dark energy in scale-invariant $R^2$ gravity

    astro-ph.CO 2026-07 conditional novelty 5.0 of 10

    In a scale-invariant R² + unimodular-gravity model, the Goldstone boson of scale symmetry becomes thawing dark energy, with its equation of state fixed by the same coupling that sets the inflationary spectral tilt.

  6. Fermi scale from quantum gravity scaling solution

    hep-th 2026-01 conditional novelty 5.0 of 10

    The Fermi/Planck ratio is claimed to be predictable from the analyticity of the quantum-gravity scaling solution for the cosmon-Higgs coupling, with numerics showing the coupling flows to a tiny, near-critical value.

  7. Robustness of dark energy phenomenology across different parameterizations

    astro-ph.CO 2025-02 conditional novelty 5.0 of 10

    The viability of minimally and non-minimally coupled quintessence models is robust across CPL, JBP, BA, and EXP parameterizations, with all four reproducing the models' predicted observables accurately.

  8. Hamilton-Jacobi Approach to Inflationary Scenarios through Extended Entropies: An Observational Perspective

    astro-ph.CO 2026-05 unverdicted novelty 4.0 of 10

    Hamilton-Jacobi analysis of slow-roll inflation with non-Bekenstein-Hawking entropies yields fitted entropy parameters (δ≈1.1-1.2, α∼10^{-14}, K∼10^{-17}) consistent with ns and r data.

  9. Extended Dark Energy analysis using DESI DR2 BAO measurements

    astro-ph.CO 2025-03 conditional novelty 4.0 of 10

    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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