General parallel cosmology

DA Gomes, JB Jiménez… - Journal of Cosmology and …, 2023 - iopscience.iop.org
General (tele) parallel Relativity, G∥ R, is the relativistic completion of Einstein's theories of
gravity. The focus of this article is the derivation of the homogeneous and isotropic solution …

Exploring the stability of cosmology near general relativity limit with different connections

MJ Guzmán, L Järv, L Pati - Physical Review D, 2024 - APS
In this work, we study cosmological spacetime configurations in f (Q) gravity with
nonvanishing symmetric teleparallel connections. It is known that the spatially flat …

Dipole cosmology in fQ-gravity

A Paliathanasis - Physics of the Dark Universe, 2024 - Elsevier
Symmetric teleparallel f (Q)-gravity allows for the presence of a perfect fluid with a tilted
velocity in the Kantowski–Sachs geometry. In this dipole model, we consider an ideal gas …

Conventionalism, cosmology and teleparallel gravity

L Järv, P Kuusk - Universe, 2023 - mdpi.com
We consider homogeneous and isotropic cosmological models in the framework of three
geometrical theories of gravitation. In Einstein's general relativity, they are given in terms of …

Observational test for gravity with weak gravitational lensing

Q Wang, X Ren, YF Cai, W Luo… - arXiv preprint arXiv …, 2024 - arxiv.org
In this article we confront a class of $ f (Q) $ gravity models with observational data of galaxy-
galaxy lensing. Specifically, we consider the $ f (Q) $ gravity models containing a small …

Chameleon mechanism in scalar nonmetricity cosmology

A Paliathanasis - Annals of Physics, 2024 - Elsevier
We investigate the dynamics and the phase-space evolution for the scalar nonmetricity
cosmology with a Chameleon mechanism. In particular, we consider a spatially flat …

Mapping solutions in nonmetricity gravity: Investigating cosmological dynamics in conformal equivalent theories

N Dimakis, KJ Duffy, A Giacomini… - Physics of the Dark …, 2024 - Elsevier
We investigate the impact of conformal transformations on the physical properties of solution
trajectories in nonmetricity gravity. Specifically, we explore the phase space and reconstruct …

Semi-Classical limit and quantum corrections in noncoincidence power-law -Cosmology

A Paliathanasis - arXiv preprint arXiv:2409.07755, 2024 - arxiv.org
Within the framework of symmetric teleparallel $ f\left (Q\right) $-gravity for a connection
defined in the non-coincidence gauge we derive the Wheeler-DeWitt equation of quantum …

Static, spherically symmetric solutions in -gravity and in nonmetricity scalar-tensor theory

N Dimakis, PA Terzis, T Christodoulakis… - arXiv preprint arXiv …, 2024 - arxiv.org
We solve the gravitational field equations for a static, spherically symmetric spacetime within
the framework of the symmetric teleparallel theory of gravity. Specifically, we derive new …