Non-Linear Matter Power Spectrum Modeling in Interacting Dark Energy Cosmologies

Understand

Understanding the behavior of the matter power spectrum on non-linear scales beyond the $\Lambda$CDM model is crucial for accurately predicting the large-scale structure (LSS) of the Universe in non-standard cosmologies.

• In this work, we present an analysis of the non-linear matter power spectrum within the framework of interacting dark energy-dark matter cosmologies (IDE).
• We employ N-body simulations and theoretical models to investigate the impact of IDE on these non-linear scales.
• Beginning with N-body simulations characterized by a fixed parameter space delineated by prior observational research, we adeptly fit the simulated spectra with a simple parametric function, achieving accuracy within 5\%.