Non-minimally coupled nonlinear spinor field in FRW cosmology

Abstract

Within the scope of a FRW cosmological model we have studied the role of spinor field in the evolution of the Universe when it is non-minimally coupled to the gravitational one. We have considered a few types of nonlinearity. It was found that if the spinor field nonlinearity describes an ordinary matter such as radiation, the presence of non-minimality becomes essential and leads to the rapid expansion of the Universe, whereas if the spinor field nonlinearity describes a dark energy, the evolution of the Universe is dominated by it and the difference between the minimal and non-minimally coupled cases become almost indistinguishable.

9 pages, 6 figures

References in corpus (6)

• f(R,T) gravity
• Fermi-bounce cosmology and the fermion curvaton mechanism
• Nonlinear Spinor Fields in Bianchi type-I spacetime: Problems and Possibilities
• Spinor driven cosmic bounces and their cosmological perturbations
• Quantum Einstein-Dirac Bianchi Universes
• Cosmology based on $f(R)$ gravity with $\mathcal{O}(1)$ eV sterile neutrino

Cited by in corpus (3)

• Spinors in cylindrically symmetric space-time
• Cosmology of fermionic dark energy coupled to curvature
• Spinor solutions of a Chern-Simons model for the superconformal algebra