Exploring cosmic dynamics in f(Q,C) gravity with modified corrections

IF 2.3 3区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Physics Letters A Pub Date : 2025-07-04 DOI:10.1016/j.physleta.2025.130773

M. Sharif , M. Zeeshan Gul , Ahmad Nawaz

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引用次数: 0

Abstract

This manuscript examines the dynamics of a bouncing universe using the parametric representation of the Hubble parameter in the framework of

f (Q, C)

theory, where

Q

denotes the non-metricity scalar and

C

signifies the boundary term. We analyze two distinct functional forms of this theory to assess the influence of altered correction terms on the universe's evolution. Additionally, we assess the characteristics of many cosmic factors, including the Hubble parameter and the deceleration parameter, fluid components and cosmographic parameters to examine the cosmic dynamics. Our findings indicate that the energy conditions violate and the state parameter exhibits quintessence or phantom eras of the universe. It is found that this gravitational theory effectively presents viable alternatives to the standard cosmological scenarios, hence providing valuable understanding of the gravitational force and the early universe.

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在修正后的f（Q，C）引力中探索宇宙动力学

本文在f（Q，C）理论框架下，利用哈勃参数的参数表示来研究弹跳宇宙的动力学，其中Q表示非度量标量，C表示边界项。我们分析了这一理论的两种不同的功能形式，以评估修正项的改变对宇宙演化的影响。此外，我们还评估了许多宇宙因素的特征，包括哈勃参数和减速参数，流体成分和宇宙学参数，以研究宇宙动力学。我们的发现表明，能量条件是违反的，状态参数表现出宇宙的精髓或幽灵时代。研究发现，这一引力理论有效地为标准宇宙学情景提供了可行的替代方案，从而对引力和早期宇宙提供了有价值的理解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physics Letters A 物理-物理：综合

CiteScore

5.10

自引率

3.80%

发文量

493

审稿时长

30 days

期刊介绍： Physics Letters A offers an exciting publication outlet for novel and frontier physics. It encourages the submission of new research on: condensed matter physics, theoretical physics, nonlinear science, statistical physics, mathematical and computational physics, general and cross-disciplinary physics (including foundations), atomic, molecular and cluster physics, plasma and fluid physics, optical physics, biological physics and nanoscience. No articles on High Energy and Nuclear Physics are published in Physics Letters A. The journal''s high standard and wide dissemination ensures a broad readership amongst the physics community. Rapid publication times and flexible length restrictions give Physics Letters A the edge over other journals in the field.