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Linear and non-linear perturbations in dark energy models

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arxiv astro-ph/0311175 v2 pith:HREVIXUI submitted 2003-11-07 astro-ph gr-qchep-th

classification astro-phgr-qchep-th
keywords darkenergyinteractionlinearperturbationequationsmodelsnon-linear
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I review the linear and second-order perturbation theory in dark energy models with explicit interaction to matter in view of applications to N-body simulations and non-linear phenomena. Several new or generalized results are obtained: the general equations for the linear perturbation growth; an analytical expression for the bias induced by a species-dependent interaction; the Yukawa correction to the gravitational potential due to dark energy interaction; the second-order perturbation equations in coupled dark energy and their Newtonian limit. I also show that a density-dependent effective dark energy mass arises if the dark energy coupling is varying.

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Cited by 4 Pith papers

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

  1. Disentangling Similarity and Relatedness in Topic Models

    cs.CL 2026-03 unverdicted novelty 7.0 of 10

    Topic models lie on a spectrum from thematic-relatedness-rich to similarity-rich, and that position predicts which downstream tasks they handle well.

  2. Non-linear Structure Formation in Planck+DESI Favoured Interacting Dark Energy Cosmologies

    astro-ph.CO 2026-06 unverdicted novelty 6.0 of 10

    N-body simulations of IDE with Q=ξHρ_x show scale-dependent deviations in the matter power spectrum, density morphology, and halo abundance that standard ΛCDM-calibrated prescriptions cannot reproduce.

  3. Averaging Dynamics of Scalar Field-Matter Interacting Models in Anisotropic Universes: The Locally Rotationally Symmetric Bianchi I Spacetime

    gr-qc 2025-08 reject novelty 4.0 of 10

    The authors apply averaging methods to classify late-time attractors for nine interacting dark sector models in Bianchi I cosmology, but the general interaction formula does not match the specific models analyzed.

  4. 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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