Dark energy with dark spinors

Abstract

Ever since the first observations that we are living in an accelerating universe, it has been asked what dark energy is. There are various explanations all of which with have various draw backs or inconsistencies. Here we show that using a dark spinor field it is possible to have an equation of state that crosses the phantom divide, becoming a dark phantom spinor which evolves into dark energy. This type of equation of state has been mildly favored by experimental data, however, in the past there were hardly any candidate theories that satisfied this crossing without creating ghosts or causing a singularity which results in the universe essentially ripping. The dark spinor model converges to dark energy in a reasonable time frame avoiding the big rip and without attaining negative kinetic energy as it crosses the phantom divide.

12 pages, 7 figures

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Cited by in corpus (41)

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• Dark spinor models in gravitation and cosmology
• The theory of local mass dimension one fermions of spin one half
• Spinor Dark Energy and Cosmological Coincidence Problem
• Exploring Elko typical signature
• Exotic Dark Spinor Fields
• A modified theory of gravity with torsion and its applications to cosmology and particle physics
• The most general cosmological dynamics for ELKO Matter Fields
• Dynamics of dark energy models and centre manifolds
• Conformal Gravity with the most general ELKO Matter
• Localization of 5D Elko Spinors on Minkowski Branes
• Zero Energy of Plane-Waves for ELKOs
• Exact solutions to Elko spinors in spatially flat Friedmann-Robertson-Walker spacetimes
• $\Lambda (t)$ cosmology induced by a slowly varying Elko field
• Cosmological constant from quarks and torsion
• Mass dimension one fermions: Constructing darkness
• A new approach on the stability analysis in ELKO cosmology
• Constraints on mass dimension one fermionic dark matter from the Yukawa interaction
• From inflation to recent cosmic acceleration: The fermionic Elko field driving the evolution of the universe
• ELKO and Dirac Spinors seen from Torsion
• Elko and mass dimension one field of spin one half: causality and Fermi statistics
• Dark spinor model with torsion and cosmology
• On coincidence problem and attractor solutions in ELKO dark energy model
• The most general ELKO Matter in torsional f(R)-theories
• Some remarks on the attractor behaviour in ELKO cosmology
• Phantom Dark Ghost in Einstein-Cartan Gravity
• Age Problem in Lemaitre-Tolman-Bondi Void Models
• Gravitational collapse of K-essence Matter in Painlevé-Gullstrand coordinates
• Spin-half mass dimension one fermions and their higher-spin generalizations
• Degeneracy pressure of mass dimension one fermionic fields and the dark matter halo of galaxies
• Fermionic degeneracy and non-local contributions in flag-dipole spinors and mass dimension one fermions
• Conformally-coupled dark spinor and FRW universe
• Symmetries and unitary interactions of mass dimension one fermionic dark matter
• Space-time evolution induced by spinor fields with canonical and non-canonical kinetic terms
• Generalized particle dynamics in anti de Sitter spaces: A source for dark energy
• Symmetries of Elko and massive vector fields
• Wigner multiplets in QFT: from Wigner degeneracy to Elko fields
• Wigner multiplets in QFT: dark sector and CPT-violating scenarios