Cosmology intertwined: A review of the particle physics, astrophysics, and cosmology associated with the cosmological tensions and anomalies

E Abdalla, GF Abellán, A Aboubrahim, A Agnello… - Journal of High Energy …, 2022 - Elsevier
Abstract The standard Λ Cold Dark Matter (ΛCDM) cosmological model provides a good
description of a wide range of astrophysical and cosmological data. However, there are a …

Seven hints that early-time new physics alone is not sufficient to solve the Hubble tension

S Vagnozzi - Universe, 2023 - mdpi.com
The Hubble tension has now grown to a level of significance which can no longer be
ignored and calls for a solution which, despite a huge number of attempts, has so far eluded …

Relaxing cosmological tensions with a sign switching cosmological constant: Improved results with Planck, BAO, and Pantheon data

Ö Akarsu, S Kumar, E Özülker, JA Vazquez, A Yadav - Physical Review D, 2023 - APS
We present a further observational analysis of the Λ s CDM model proposed in Akarsu et
al.[Phys. Rev. D 104, 123512 (2021) PRVDAQ 2470-0010 10.1103/PhysRevD …

Relaxing cosmological tensions with a sign switching cosmological constant

Ö Akarsu, S Kumar, E Özülker, JA Vazquez - Physical Review D, 2021 - APS
Inspired by the recent conjecture originated from graduated dark energy that the Universe
has recently transitioned from anti–de Sitter vacua to de Sitter vacua, we extend the …

Graduated dark energy: Observational hints of a spontaneous sign switch in the cosmological constant

Ö Akarsu, JD Barrow, LA Escamilla, JA Vazquez - Physical Review D, 2020 - APS
We study the cosmological constant (Λ) in the standard Λ cold dark matter model by
introducing the graduated dark energy (gDE) characterized by a minimal dynamical …

Anisotropic compact stars with Karmarkar condition in energy-momentum squared gravity

M Sharif, MZ Gul - General Relativity and Gravitation, 2023 - Springer
The main objective of this paper is to examine the viability and stability of anisotropic
compact stellar objects adopting the Karmarkar condition in energy-momentum squared …

Omnipotent dark energy: A phenomenological answer to the Hubble tension

SA Adil, Ö Akarsu, E Di Valentino, RC Nunes… - Physical Review D, 2024 - APS
This paper introduces the class of omnipotent dark energy (DE) models characterized by
nonmonotonic energy densities that are capable of attaining negative values with …

Phantom Cosmological Model with Observational Constraints in f (Q) f(Q) Gravity

SA Narawade, B Mishra - Annalen der Physik, 2023 - Wiley Online Library
In this paper, the cosmological model of the Universe has been presented in f (Q) f(Q) gravity
and the parameters are constrained from the cosmological data sets. At the beginning, a …

Role of theory on charged compact stars

M Sharif, MZ Gul - Physica Scripta, 2023 - iopscience.iop.org
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f (Q, T) gravity models with observational constraints

S Arora, SKJ Pacif, S Bhattacharjee… - Physics of the Dark …, 2020 - Elsevier
The paper presents late time cosmology in f (Q, T) gravity where the dark energy is purely
geometric in nature. We start by employing a well motivated f (Q, T) gravity model, f (Q, T)= m …