Matter bounce scenario in extended symmetric teleparallel gravity

被引:25
作者
Agrawal, A. S. [1 ]
Mishra, B. [1 ]
Agrawal, P. K. [2 ]
机构
[1] Birla Inst Technol & Sci Pilani, Dept Math, Hyderabad Campus, Hyderabad 500078, India
[2] Genba Sopanrao Moze Arts Commerce & Sci Coll, Dept Comp Sci, Pune 411006, India
来源
EUROPEAN PHYSICAL JOURNAL C | 2023年 / 83卷 / 02期
关键词
UNIVERSE; MODELS; COSMOLOGIES;
D O I
10.1140/epjc/s10052-023-11266-8
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
In this paper, we have shown the matter bounce scenario of the Universe in an extended symmetric teleparallel gravity, the f (Q) gravity. Motivated from the bouncing scenario and loop quantum cosmology (LQC), the form of the function f (Q) has been obtained at the backdrop of Friedmann-Lemaitre-Robertson Walker (FLRW) space time. Considering the background cosmology dominated by dust fluid, the e-folding parameter has been expressed, which contains the nonmetricity term. Since the slow roll criterion in the bouncing context is not valid, we used a conformal equivalence between f (Q) and scalar-tensor model to apply the bottom-up reconstruction technique in the bouncing model. The dynamics of the model has been studied through the phase space analysis, where both the stable and unstable nodes are obtained. Also, the stability analysis has been performed with the first order scalar perturbation of the Hubble parameter and matter energy density to verify the stability of the model.
引用
收藏
页数:10
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