Unification: Emergent universe followed by inflation and dark epochs from multi-field theory
Eduardo Guendelman, Ramon Herrera

TL;DR
This paper introduces a multi-field two-measures theory that unifies the early emergent universe, inflation, and dark epochs, producing a comprehensive cosmological model consistent with observations.
Contribution
It presents a novel multi-field two-measures framework that naturally generates dark energy, dark matter, and stiff matter without additional assumptions, unifying multiple universe epochs.
Findings
A stable emergent universe solution precedes inflation.
The model's inflationary predictions align with Planck data.
Dark energy and dark matter emerge from K-essence in the model.
Abstract
A two scalar field model that incorporates non Riemannian Measures of integration or usually called Two Measures Theory (TMT) is introduced, in order to unify the early and present universe. In the Einstein frame a K-essence is generated and as a consequence for the early universe, we can have a Non Singular Emergent universe followed by Inflation and for the present universe dark epochs with consistent generation of dark energy (DE), dark matter (DM) and stiff matter. The scale invariance is introduced and then is spontaneously broken from the integration of the degrees of freedom associated with the modified measures. The resulting effective potentials and K-essence in the Einstein frame produce three flat regions corresponding to the different epochs mentioned before. For the first flat region we can associate an emergent and an inflationary universe. Here for a parameter-space…
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Taxonomy
TopicsCosmology and Gravitation Theories · Geophysics and Gravity Measurements · Solar and Space Plasma Dynamics
