Dynamics of Linear Scalar Perturbation in f(Q)+f(T) class of f(Q,T) gravity

Abstract

In this work, we study the f(Q,T) model of symmetric teleparallel modified gravity in the framework of cosmological perturbation theory. Using a general approach, we extract the differential matter density equation then we simplify it as a second-order equation by considering the sub-Hubble approximation. Our analysis is then based on two different forms of f(Q,T) that we study in a classic approach and again using Holographic dark energy. Our initial results yield a significant divergence from the perturbed behavior of the LambdaCDM model, imposing stringent constraints on the feasibility of this class of theories but the HDE contribution triggers an interesting discussion.

References in corpus (31)

• f(R,T) gravity
• A Model of Holographic Dark Energy
• Coincident General Relativity
• Quantum deSitter cosmology and phantom matter
• Unifying phantom inflation with late-time acceleration: scalar phantom-non-phantom transition model and generalized holographic dark energy
• The teleparallel equivalent of general relativity
• Cosmology in $f(Q)$ geometry
• First evidence that non-metricity f(Q) gravity could challenge $\Lambda$CDM
• Dynamics of scalar perturbations in f(R,T) gravity
• Signatures of $f(Q)$-gravity in cosmology
• On the Importance of NNLO QCD and Isospin-breaking Corrections in ${\epsilon }^{\prime }/\epsilon$
• Black holes in $f(\mathbb{Q})$ Gravity
• Lagrange formulation of the symmetric teleparallel gravity
• Can $f(Q)$ gravity challenge $\Lambda$CDM?
• $f(Q,T)$ gravity models with observational constraints
• New models and Big Bang Nucleosynthesis constraints in $f(Q)$ gravity
• Baryogenesis in $f(Q,\mathcal{T})$ Gravity
• Cosmological Perturbation Theory in $f(Q,T)$ Gravity
• Astronomical bounds on a cosmological model allowing a general interaction in the dark sector
• Energy conditions in $f(Q,T)$ gravity
• Constraining effective equation of state in $f(Q,T)$ gravity
• Accelerating Universe in Hybrid and Logarithmic Teleparallel Gravity
• Holographic dark energy in Gauss-Bonnet gravity with Granda-Oliveros cut-off
• Density Perturbation Growth in Teleparallel Cosmology
• Cosmological Perturbation Theory in Metric-Affine Gravity
• Observational Constraints on Growth Index with Cosmography
• Cosmic Growth in $f(T)$ Teleparallel Gravity
• Improving precision and accuracy in cosmology with model-independent spectrum and bispectrum
• Holographic F(Q,T) Gravity with Lambert Solution
• Improved model of large-field inflation with primordial black hole production in Starobinsky-like supergravity
• Spatial Dependence of the Growth Factor in Scalar-Tensor Cosmology