Non-linear Cosmological Perturbations for Coupled Dark Energy

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.

We have corrected minor typographical errors, standardized notation, and improved clarity. The main results and conclusions remain unchanged

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Cited by in corpus (2)

• One-loop power spectrum corrections in interacting dark energy cosmologies
• Crunching, Bouncing, and Cyclical Cosmologies from Dark Sector Interactions