Dynamically Generated Inflationary Lambda-CDM
arXiv, 2020
Online
unknown
Zugriff:
Our primary objective is to construct a plausible unified model of inflation, dark energy and dark matter from a fundamental Lagrangian action first principle, where all fundamental ingredients are systematically dynamically generated starting from a very simple model of modified gravity interacting with a single scalar field employing the formalism of non-Riemannian spacetime volume-elements. The non-Riemannian volume element in the initial scalar field action leads to a hidden nonlinear Noether symmetry which produces energy-momentum tensor identified as a sum of a dynamically generated cosmological constant and a dust-like dark matter. The non-Riemannian volume-element in the initial Einstein-Hilbert action upon passage to the physical Einstein-frame creates dynamically a second scalar field with a non-trivial inflationary potential and with an additional interaction with the dynamically generated dark matter. The resulting Einstein-frame action describes a fully dynamically generated inflationary model coupled to dark matter. Numerical results for observables such as the scalar power spectral index and the tensor-to-scalar ratio conform to the latest 2018 PLANCK data.
Comment: 24 pages, v.2 LaTeX style changed, references added, typos corrected
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Dynamically Generated Inflationary Lambda-CDM
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Autor/in / Beteiligte Person: | Guendelman, Eduardo ; Benisty, David ; Pacheva, Svetlana ; Nissimov, Emil |
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Veröffentlichung: | arXiv, 2020 |
Medientyp: | unknown |
DOI: | 10.48550/arxiv.2002.04110 |
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