21 cm power spectrum in interacting cubic Galileon model

TL;DR

This paper investigates the potential of 21 cm power spectrum observations, particularly with SKA1-mid, to distinguish between interacting and non-interacting cubic Galileon models and the standard Lambda-CDM cosmology.

Contribution

It demonstrates the detectability of cubic Galileon models using 21 cm power spectrum data, highlighting the observational prospects of upcoming radio interferometers.

Findings

SKA1-mid can differentiate cubic Galileon models from Lambda-CDM.

Detectability depends on specific model parameter values.

Both interacting and non-interacting models are distinguishable with future observations.

Abstract

We show the detectability of interacting and non-interacting cubic Galileon models from the $\Lambda$CDM model through the 21 cm power spectrum. We show that the interferometric observations like the upcoming SKA1-mid can detect both the interacting and the non-interacting cubic Galileon model from the $\Lambda$CDM model depending on the parameter values.