TY  - JOUR
A1  - Benisty, David
A1  - Guendelman, Eduardo I.
A1  - Nissimov, Emil
A1  - Pacheva, Svetlana
T1  - Dynamically generated inflationary ΛCDM
T2  - Symmetry
N2  - Our primary objective is to construct a plausible, unified model of inflation, dark energy and dark matter from a fundamental Lagrangian action first principle, wherein 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 an energy-momentum tensor identified as the sum of a dynamically generated cosmological constant and 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.
KW  - inflation
KW  - dark energy
KW  - dark matter
Y1  - 2020
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/55527
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-555270
SN  - 2073-8994
VL  - 12
EP  - 3, art. 481
PB  - MDPI
CY  - Basel
ER  -