Non-interacting new agegraphic dark energy model in f(Q) gravity

IF 1.6 3区物理与天体物理 Q3 PHYSICS, FLUIDS & PLASMAS

High Energy Density Physics Pub Date : 2025-05-27 DOI:10.1016/j.hedp.2025.101198

M. Sharif , Madiha Ajmal

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引用次数: 0

Abstract

In this study, we explore the reconstruction of a new agegraphic dark energy model in a flat Friedmann–Robertson–Walker spacetime by

f

(

Q

) gravity framework, where

Q

represents non-metricity. We assume that the scale factor follows a power-law and explore how this model aligns with the expanding universe. In this perspective, we develop a new agegraphic

f

(

Q

) model and analyze the graphical behavior for cosmic evolution. We analyze physical characteristics of the model using the equation of state parameter, (

ω_{D} - ω_{D}^{'}

) and the (

r - s

) planes. The equation of state parameter indicates a quintessence era characterized by accelerated expansion. The (

ω_{D} - ω_{D}^{'}

)-plane identifies the freezing region and the Chaplygin gas model is represented in the (

r - s

)-plane. Finally, we examine the stability of the non-interacting model by evaluating the squared speed of sound. Our findings show that the non-interacting new agegraphic dark energy model effectively resolves the cosmic coincidence problem.

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f(Q)引力中的非相互作用新年龄暗能量模型

在本研究中，我们探索了用f (Q)引力框架在平坦的friedman - robertson - walker时空中重建一个新的年龄暗能量模型，其中Q表示非度规性。我们假设比例因子遵循幂律，并探索这个模型如何与膨胀的宇宙保持一致。从这个角度出发，我们建立了一个新的年龄f (Q)模型，并分析了宇宙演化的图形行为。我们用状态参数方程（ωD - ωD '）和（r - s）平面来分析模型的物理特性。状态参数方程表明了一个以加速膨胀为特征的精粹时代。（ωD−ωD′）平面表示冻结区，（r−s）平面表示Chaplygin气体模型。最后，我们通过评估声速的平方来检验非相互作用模型的稳定性。我们的发现表明，非相互作用的新年龄暗能量模型有效地解决了宇宙巧合问题。

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

High Energy Density Physics PHYSICS, FLUIDS & PLASMAS-

CiteScore

4.20

自引率

6.20%

发文量

审稿时长

6-12 weeks

期刊介绍： High Energy Density Physics is an international journal covering original experimental and related theoretical work studying the physics of matter and radiation under extreme conditions. ''High energy density'' is understood to be an energy density exceeding about 1011 J/m3. The editors and the publisher are committed to provide this fast-growing community with a dedicated high quality channel to distribute their original findings. Papers suitable for publication in this journal cover topics in both the warm and hot dense matter regimes, such as laboratory studies relevant to non-LTE kinetics at extreme conditions, planetary interiors, astrophysical phenomena, inertial fusion and includes studies of, for example, material properties and both stable and unstable hydrodynamics. Developments in associated theoretical areas, for example the modelling of strongly coupled, partially degenerate and relativistic plasmas, are also covered.