Dynamics of a scalar field, with a double exponential potential, interacting with dark matter

TL;DR

This paper investigates the interaction between dark matter and dark energy modeled by a scalar field with a double exponential potential, identifying conditions for late-time attractor solutions and realistic cosmological evolution.

Contribution

It introduces a scalar field model with a double exponential potential and analyzes its role as a late-time attractor in the universe's evolution.

Findings

Scalar field solutions can be late-time attractors.

Cosmological evolution includes radiation, matter, and dark energy dominance.

Conditions for realistic cosmological sequences are identified.

Abstract

We study the interaction between dark matter and dark energy, with dark energy described by a scalar field having a double exponential effective potential. We discover conditions under which such a scalar field driven solution is a late time attractor. We observe a realistic cosmological evolution which consists of sequential stages of dominance of radiation, matter and dark energy, respectively.