# Parametrising non-linear dark energy perturbations

17 May 2020 Hassani Farbod L'Huillier Benjamin Shafieloo Arman Kunz Martin Adamek Julian

In this paper, we quantify the non-linear effects from $k$-essence dark energy through an effective parameter $\mu$ that encodes the additional contribution of a dark energy fluid or a modification of gravity to the Poisson equation. This is a first step toward quantifying non-linear effects of dark energy/modified gravity models in a more general approach... (read more)

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• COSMOLOGY AND NONGALACTIC ASTROPHYSICS
• GENERAL RELATIVITY AND QUANTUM COSMOLOGY