Sub-Horizon and Quasi-Static Approximations in Interacting Dark Sector Models Involving Scalar Field Dark Energy

arXiv:2609.30937 · gr-qc, astro-ph.CO · Submitted 2026-09-25 · Read on arXiv

gr-qc, astro-ph.CO

Submitted: 2026-09-25

Updated: 2026-09-25

Terminology

• Quintessence — 33× in this paper · explained in 2 episodes
• Accuracy — 24× in this paper · explained in 1 episode
• Sub-Horizon Approximation — 18× in this paper
• Clustering — 6× in this paper · explained in 2 episodes
• Matter Power Spectrum — 6× in this paper · explained in 2 episodes
• Consistency — 5× in this paper · explained in 3 episodes
• Anisotropy — 3× in this paper · explained in 3 episodes
• N-body simulations — 3× in this paper · explained in 2 episodes
• Adam — 2× in this paper · explained in 2 episodes
• Benchmark — 2× in this paper · explained in 2 episodes
• Benchmarking — 1× in this paper · explained in 3 episodes
• Boltzmann Equation — 1× in this paper · explained in 2 episodes
• Generalization — 1× in this paper · explained in 13 episodes
• Gravitational Lensing — 1× in this paper · explained in 2 episodes
• Homogeneity — 1× in this paper · explained in 2 episodes

Sources

• CAMB v2: cosmological power spectra for high-precision surveys
• The Cosmic Linear Anisotropy Solving System (CLASS) I: Overview
• PyCosmo: An Integrated Cosmological Boltzmann Solver
• Large-Scale Structure of the Universe and Cosmological Perturbation Theory
• Dynamical Dark Energy from $F(R)$ Gravity Models Unifying Inflation with Dark Energy: Confronting the Latest Observational Data
• f(R) theories
• Cosmological perturbations in $k$-essence model
• Releasing scalar fields: cosmological simulations of scalar-tensor theories for gravity beyond the static approximation
• On the evolution of density perturbations in f(R) theories of gravity
• Limits of Quasi-Static Approximation in Modified-Gravity Cosmologies
• Relativistic scalar fields and the quasi-static approximation in theories of modified gravity
• Comparison of different approaches to the quasi-static approximation in Horndeski models
• Tracking the validity of the quasi-static and sub-horizon approximations in modified gravity
• A sub-horizon framework for probing the relationship between the cosmological matter distribution and metric perturbations
• On the accuracy of N-body simulations at very large scales
• Cosmological effect of coherent oscillation of ultralight scalar fields in a multicomponent universe
• Gravitational collapse of Matter in the presence of Scalar field Dark energy
• Non-minimal coupling of scalar fields in the dark sector and generalization of the top-hat collapse
• Gravitational collapse of matter in the presence of non-minimally coupled Quintessence and Phantom-like scalar fields
• Dynamical stability in models where dark matter and dark energy are non-minimally coupled to curvature

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