Spinor Dark Energy and Cosmological Coincidence Problem

TL;DR

This paper explores how Elko spinor fields as dark energy candidates impact the cosmological coincidence problem, revealing that this issue is significant in spinor dark energy models.

Contribution

It applies the dynamical system method to analyze the cosmological coincidence problem within spinor dark energy models, highlighting its importance.

Findings

The coincidence problem is significant in spinor dark energy models.

Dynamical system analysis reveals key behaviors of these models.

Results suggest the need to address the coincidence problem in such theories.

Abstract

Recently, the so-called Elko spinor field has been proposed to be a candidate of dark energy. It is a non-standard spinor and has unusual properties. When the Elko spinor field is used in cosmology, its unusual properties could bring some interesting consequences. In the present work, we discuss the cosmological coincidence problem in the spinor dark energy models by using the dynamical system method. Our results show that the cosmological coincidence problem should be taken to heart in the investigations of spinor dark energy models.