Dynamics of Linear Scalar Perturbation in f(Q)+f(T) class of f(Q,T) gravity
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866913976308203520 |
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| author | Filali, Houda Laamara, Rachid Ahl Bennai, Mohamed Saidi, El Hassan |
| author_facet | Filali, Houda Laamara, Rachid Ahl Bennai, Mohamed Saidi, El Hassan |
| contents | 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. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2508_03495 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Dynamics of Linear Scalar Perturbation in f(Q)+f(T) class of f(Q,T) gravity Filali, Houda Laamara, Rachid Ahl Bennai, Mohamed Saidi, El Hassan General Relativity and Quantum Cosmology 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. |
| title | Dynamics of Linear Scalar Perturbation in f(Q)+f(T) class of f(Q,T) gravity |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2508.03495 |