Generalizing a Unified Model of Dark Matter, Dark Energy, and Inflation with Non Canonical Kinetic Term

TL;DR

This paper proposes a unified scalar field model with a non-canonical kinetic term that explains dark matter, dark energy, and inflation, extending previous models with a more general kinetic structure.

Contribution

It introduces a more general kinetic term in a unification model, demonstrating viability at background and perturbation levels, advancing the theoretical framework for cosmic evolution.

Findings

Model successfully unifies dark matter, dark energy, and inflation

Viability confirmed at background and linear perturbation levels

Extends previous models with a more general kinetic term

Abstract

We study a unification model for dark energy, dark matter, and inflation with a single scalar field with non canonical kinetic term. In this model the kinetic term of the Lagrangian accounts for the dark matter and dark energy, and at early epochs a quadratic potential accounts for slow roll inflation. The present work is an extension to the work by Bose and Majumdar [1] with a more general kinetic term that was proposed by Chimento in [2]. We demonstrate that the model is viable at the background and linear perturbation levels.