Reconstructing a String-Inspired Quintom Model of Dark Energy

TL;DR

This paper introduces a reconstruction method for a string-inspired dark energy model that can potentially explain the crossing of the cosmological constant boundary by the equation-of-state parameter, using different parametrizations.

Contribution

It presents a novel reconstruction approach for a specific string-inspired dark energy model, enabling analysis of its behavior with various dynamical parametrizations.

Findings

Model allows crossing of w = -1 boundary.

Reconstruction consistent with multiple parametrizations.

Provides a framework for analyzing string-inspired dark energy models.

Abstract

In this paper, we develop a simple method for the reconstruction of the string-inspired dark energy model with the lagrangian $ {\cal L} = -V (\phi) \sqrt{1 - \alpha' {\nabla}_{\mu} \phi \nabla^{\mu} \phi + \beta' \phi \Box \phi} $ given by Cai et. al., which may allow the equation-of-state parameter cross the cosmological constant boundary $ (w=-1) $. We reconstruct this model in the light of three forms of parametrization for dynamical dark energy.