General covariant symmetric teleparallel cosmology

M Hohmann - Physical Review D, 2021‏ - APS
Symmetric teleparallel gravity theories, in which the gravitational interaction is attributed to
the nonmetricity of a flat, symmetric, but not metric-compatible affine connection, have been …

Viable and stable compact stars in theory

MZ Gul, S Rani, M Adeel, A Jawad - The European Physical Journal C, 2024‏ - Springer
In this paper, we study the viability and stability of anisotropic compact stars in the context of
f (Q) theory, where Q is non-metricity scalar. We use Finch–Skea solutions to investigate the …

New models and big bang nucleosynthesis constraints in f(Q) gravity

FK Anagnostopoulos, V Gakis, EN Saridakis… - The European Physical …, 2023‏ - Springer
The f (Q) theories of modified gravity arise from the consideration of non-metricity as the
basic geometric quantity, and have been proven to be very efficient in describing the late …

A class of static spherically symmetric solutions in f(Q)-gravity

M Calzá, L Sebastiani - The European Physical Journal C, 2023‏ - Springer
We analyze a class of topological static spherically symmetric vacuum solutions in f (Q)-
gravity. We considered an Ansatz ensuring that those solutions trivially satisfy the field …

A New Parametrization of Hubble Parameter in f (Q) f(Q) Gravity

M Koussour, SKJ Pacif, M Bennai… - Fortschritte der …, 2023‏ - Wiley Online Library
In this paper, we examine the accelerated expansion of the Universe at late‐time in the
framework of f (Q) f(Q) gravity theory in which the non‐metricity scalar Q describes the …

[HTML][HTML] Metric-affine Myrzakulov gravity theories

N Myrzakulov, R Myrzakulov, L Ravera - Symmetry, 2021‏ - mdpi.com
In this paper, we review the so-called Myrzakulov Gravity models (MG-N, with N= I, II,…, VIII)
and derive their respective metric-affine generalizations (MAMG-N), discussing also their …

Constraining physical parameters of DESs via the secondary component of the GW190814 event and other self-bound NS pulsars in f(Q)-gravity theory

P Bhar, A Errehymy, S Ray - The European Physical Journal C, 2023‏ - Springer
The spherically symmetric dark energy (DE) stellar model is presented here within the
context of the f (Q) theory of gravity. In order to develop the model, we take into account the …

Tsallis holographic dark energy scenario in viscous gravity with tachyon field

S Gupta, A Dixit, A Pradhan - International Journal of Geometric …, 2023‏ - World Scientific
This study investigates a bulk viscous fluid anisotropic cosmological model with f (Q) gravity.
Here, Q stands for the nonmetricity factor that drives gravitational interaction. We …

Anisotropic solutions in symmetric teleparallel f Q-theory: Kantowski–Sachs and Bianchi III LRS cosmologies

N Dimakis, M Roumeliotis, A Paliathanasis… - The European Physical …, 2023‏ - Springer
We investigate the existence of anisotropic self-similar exact solutions in symmetric
teleparallel f Q-theory. For the background geometry we consider the Kantowski–Sachs and …

Study of self-bound compact stars in gravity and observational constraints on the model parameters

SK Maurya, H Chaudhary, A Ditta, G Mustafa… - The European Physical …, 2024‏ - Springer
The present study is based on f (T) gravity, where we impose possible observational
constraints on the model parameters to obtain physically plausible features of compact stars …