Non-linear cosmological perturbations for coupled dark energy
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 e...
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
1 September 2025
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| In: |
Journal of cosmology and astroparticle physics
Year: 2025, Issue: 9, Pages: 1-18 |
| ISSN: | 1475-7516 |
| DOI: | 10.1088/1475-7516/2025/09/001 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1088/1475-7516/2025/09/001 Verlag, lizenzpflichtig, Volltext: https://iopscience.iop.org/article/10.1088/1475-7516/2025/09/001 
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| Author Notes: | Bilal Tüdes and Luca Amendola |
| Summary: | 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. |
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| Item Description: | Gesehen am 15.01.2026 |
| Physical Description: | Online Resource |
| ISSN: | 1475-7516 |
| DOI: | 10.1088/1475-7516/2025/09/001 |