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.

arXiv comment9 pages, 6 figures

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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