Stability of de Sitter solutions sourced by dark spinors

TL;DR

This paper investigates the stability of de Sitter solutions in cosmology sourced by dark spinors, using dynamical systems to identify fixed points and their stability, revealing some stable de Sitter universes.

Contribution

It provides a new analysis of de Sitter solutions sourced by dark spinors using a different approach from previous studies, identifying stable solutions.

Findings

Stable de Sitter solutions identified

Different dynamical system approach yields new results

Fixed points correspond to cosmologically relevant universes

Abstract

Cosmology of ELKO and Lorentz Invariant NSS has been investigated using dynamical system method starting from the proposal of Boehmer et al [arXiv:1003.3858]. Some different results have been obtained by a different approach. The exact solutions described by fixed points of the dynamical system and their stability have been discussed. Some stable solutions corresponding to de Sitter universes have been obtained.