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arXiv · 2406.15409

The dynamics of matter bounce cosmology in Weyl-type $f(Q,T)$ gravity

A. Zhadyranova·M. Koussour·S. Bekkhozhayev
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Abstract

In this work, we investigate the dynamics of bouncing cosmologies within the framework of Weyl-type $f(Q,T)$ gravity. Here, $Q$ represents the non-metricity of the space-time, is determined by the vector field $w_\mu$, while $T$ represents the trace of the matter energy-momentum tensor. Our objective is to explore the feasibility of avoiding the Big Bang singularity by implementing a matter-bounce cosmology. To achieve this, we consider a specific model with the functional form $f(Q,T)=\alpha Q+\frac{\beta }{6\kappa ^2}T$, where $\alpha$ and $\beta$ are model parameters. We analyze the dynamical parameters associated with this model and examine the influence of the Weyl-type $f(Q,T)$ theory on these parameters. Moreover, we assess the stability of the proposed model to ensure its viability as a cosmological scenario. Through our analysis, we aim to gain insights into the potential implications and consequences of Weyl-type $f(Q,T)$ gravity for bouncing scenarios, contributing to our understanding of alternative gravitational theories in the context of cosmology.

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A. Zhadyranova, M. Koussour, S. Bekkhozhayev. 2024-05-12. The dynamics of matter bounce cosmology in Weyl-type $f(Q,T)$ gravity. https://doi.org/10.1016/j.cjph.2024.04.023

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