Dark Energy Cosmology with Spinor Field

Recent observations have shown that our universe is currently undergoing a period of accelerating expansion. In view of the astrophysical data we find that the equation of state of the dark energy lies in a narrow range around w = −1. In this paper we discuss the possibility of treating a spinor fie...

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Bibliographic Details
Published in:International journal of theoretical physics 2023-10, Vol.62 (Suppl 1), Article S1
Main Authors: Sun, Zu-Yao, Shen, You-Gen
Format: Article
Language:English
Subjects:
Dark energy
Elementary Particles
Equations of state
Evolution
Mathematical and Computational Physics
Physics
Quantum Field Theory
Quantum Physics
Theoretical
Universe
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Summary:Recent observations have shown that our universe is currently undergoing a period of accelerating expansion. In view of the astrophysical data we find that the equation of state of the dark energy lies in a narrow range around w = −1. In this paper we discuss the possibility of treating a spinor field as dark energy to realize the equation of state parameter w < −1 or w > −1. We derive the main equations which govern the evolution of the universe and then discuss the evolution and attractor property of this model, and show a late time de Sitter attractor. Finally we rewrite them with the observable quantities.
ISSN:0020-7748
1572-9575
DOI:10.1007/s10773-006-9128-x