Non-linear Cosmological Perturbations for Coupled Dark Energy
astro-ph.CO
Submitted: 2024-11-09
Updated: 2026-09-18
Comments: We have corrected minor typographical errors, standardized notation, and improved clarity. The main results and conclusions remain unchanged
Journal ref: Bilal Tüdes and Luca Amendola JCAP09(2025)001
DOI: 10.1088/1475-7516/2025/09/001
License: http://creativecommons.org/licenses/by/4.0/
The gist: We derive the one-loop perturbation kernels for a minimal modified gravity model in which dark energy is coupled to dark matter via a constant coupling.
Terminology
Abstract
We derive the one-loop perturbation kernels for a minimal modified gravity model in which dark energy is coupled to dark matter via a constant coupling. We derive the time-dependent kernels via analytical and numerical solutions and provide accurate fitting functions. These kernels can be directly employed to test for modified gravity in forthcoming large-scale surveys.
Sources
- The DESI Experiment Part I: Science,Targeting, and Survey Design
- Euclid. I. Overview of the Euclid mission
- Cosmology with the SKA -- overview
- Large-Scale Galaxy Bias
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