Dynamical system analysis of scalar field cosmology in coincident f (Q) gravity

S Ghosh, R Solanki, PK Sahoo - Physica Scripta, 2024 - iopscience.iop.org
In this article, we investigate scalar field cosmology in the coincident f (Q) gravity formalism.
We calculate the motion equations of f (Q) gravity under the flat Friedmann-Lemaître …

Dynamics of a higher-dimensional Einstein–Scalar–Gauss–Bonnet cosmology

AD Millano, C Michea, G Leon… - Physics of the Dark …, 2024 - Elsevier
We study the dynamics of the field equations in a five-dimensional spatially flat Friedmann–
Lemaître–Robertson–Walker metric in the context of a Gauss–Bonnet–Scalar field theory …

[HTML][HTML] Fractional Einstein–Gauss–Bonnet Scalar Field Cosmology

B Micolta-Riascos, AD Millano, G Leon, B Droguett… - Fractal and …, 2024 - mdpi.com
Our paper introduces a new theoretical framework called the Fractional Einstein–Gauss–
Bonnet scalar field cosmology, which has important physical implications. Using fractional …

Cosmological time crystals from Gauss-Bonnet gravity in four dimensions

H Khodabakhshi, F Shojai, H Lü - Journal of Cosmology and …, 2024 - iopscience.iop.org
We investigate various cosmological aspects of a 4-Dimensional Gauss-Bonnet Lagrangian,
which is integrated into the Einstein Lagrangian with an arbitrary sign, using the Friedman …

Observational constraints on extended Proca-Nuevo gravity and cosmology

FK Anagnostopoulos, EN Saridakis - Journal of Cosmology and …, 2024 - iopscience.iop.org
Abstract We confront massive Proca-Nuevo gravity with cosmological observations. The
former is a non-linear theory involving a massive spin-1 field, that can be extended …

Non-minimally coupled quintessence in the Gauss-Bonnet model, symmetry breaking, and cosmic acceleration

HM Sadjadi - arxiv preprint arxiv:2310.03697, 2023 - arxiv.org
We consider a model consisting of a quintessence coupled to the Ricci scalar and the Gauss-
Bonnet invariant. We propose a mechanism for the rising of dark energy in the matter era …

[HTML][HTML] Revise the Phase-Space Analysis of the Dynamical Spacetime Unified Dark Energy Cosmology

A Paliathanasis - Universe, 2023 - mdpi.com
We analyze the phase-space of an alternate scalar field cosmology that aims to combine the
concepts of dark energy and the dark sector. The investigation focuses on stationary points …

New insights from GW170817 in the dynamical system analysis of Einstein Gauss–Bonnet gravity

KF Dialektopoulos, JL Said… - Physics of the Dark …, 2023 - Elsevier
In this work, we explore the dynamical system phase space of Einstein–Gauss–Bonnet
theory in the cosmological minisuperspace in the light of GW170817. This approach binds …

CDM-like evolution in Einstein-scalar-Gauss-Bonnet gravity

MAS Pinto, JL Rosa - arxiv preprint arxiv:2411.04066, 2024 - arxiv.org
In this work, we analyze the Einstein-scalar-Gauss-Bonnet (EsGB) theory of gravity in a
cosmological context using the formalism of dynamical systems. We obtain the equations of …

[PDF][PDF] Fractional Einstein–Gauss–Bonnet Scalar Field Cosmology. Fractal Fract. 2024, 8, 626

B Micolta-Riascos, AD Millano, G Leon, B Droguett… - 2024 - researchgate.net
Our paper introduces a new theoretical framework called the Fractional Einstein–Gauss–
Bonnet scalar field cosmology, which has important physical implications. Using fractional …