From Dark Energy to Dark Matter via Non-Minimal Coupling

TL;DR

This paper introduces toy cosmological models with non-minimal gravity-scalar coupling in Palatini formalism, showing a transition from dark energy-driven acceleration to dark matter domination in the universe's evolution.

Contribution

It presents novel cosmological models that connect dark energy and dark matter through non-minimal coupling in the Palatini formalism, offering new insights into cosmic evolution.

Findings

Models exhibit a transition from dark energy to dark matter dominance.

Accelerated expansion precedes dark matter domination in these models.

The approach provides a unified framework for dark sector evolution.

Abstract

Toy cosmological models based on non-minimal coupling between gravity and scalar dilaton-like field are presented in the framework of Palatini formalism. They have the following property: preceding to a given cosmological epoch is a dark energy epoch with an accelerated expansion. The next (future) epoch becomes dominated by some kind of dark matter.