Cosmology from multimeasure multifield model

Abstract

We consider the cosmological application of a (variant of) relatively newly proposed model \cite{1609.06915} unifying inflation, dark energy, dark matter, and the Higgs mechanism. The model was originally defined using additional non-Riemannian measures but it can be reformulated into effective quintessential model unifying inflation, dark energy and dark matter. Here we demonstrate numerically that it is capable of describing the entire Universe evolution in a seamless way, but this requires some revision of the model setup. The main reason is that there is a strong effective friction in the model, a feature which has been neglected in the pioneer work. This improves the model potential for proper description of the Universe evolution, because the friction ensures a finite time inflation with dynamically maintained low-value slow-roll parameters in the realistic scenarios. In addition, the model predicts the existence of a constant scalar field in late Universe.

17 pages, 6 figures, accepted for publication in International Journal of Modern Physics A

References in corpus (18)

• Planck 2015 results. XIII. Cosmological parameters
• Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics Beyond LambdaCDM
• Dark Energy after GW170817: dead ends and the road ahead
• Formalising the Slow-Roll Approximation in Inflation
• Quintessential inflation
• General Relativity and Cosmology: Unsolved Questions and Future Directions
• Scale invariance, new inflation and decaying Lambda terms
• Dynamical measure and field theory models free of the cosmological constant problem
• The Principle of Non-Gravitating Vacuum Energy and some of its consequences
• Emergent Cosmology, Inflation and Dark Energy
• Inflation and Transition to a Slowly Accelerating Phase from S.S.B. of Scale Invariance
• A two measure model of dark energy and dark matter
• Unified Dark Energy and Dust Dark Matter Dual to Quadratic Purely Kinetic K-Essence
• Scale Symmetry Breaking From Total Derivative Densities and the Cosmological Constant Problem
• Connecting The Non-Singular Origin of the Universe, The Vacuum Structure and The Cosmological Constant Problem
• Cosmological aspects of a unified dark energy and dust dark matter model
• Dark Energy and Inflation in a Gravitational Wave Dominated Universe
• The multi-measure cosmological model and its peculiar effective potential

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• Cosmology of fermionic dark energy coupled to curvature
• Special cases of the Multi-Measure Model -- understanding the prolonged inflation
• The role of the slope in the the multi-measure cosmological model