Bouncing universe in fractal gravity

IF 1 4区 物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY
D. D. Pawar, A. P. Nirwal, D. K. Raut, Shah Muhammad, Euaggelos E. Zotos
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引用次数: 0

Abstract

In this study, we explore matter bounce modeling through the lens of fractal gravity. We use a non-zero parameter for the scaling factor. Also describe Type III singular bouncing cosmology evolution. The cosmological bounce occurs in such a way that the bouncing point coincides exactly with Type III singularity point. We derive the related field equations within the framework of the FRW background. Further, we obtained the deceleration parameter, expressions for pressure, density and the Equation of State parameter in terms of cosmic time t. We also analyze the violation of the Null and Strong energy conditions near the bounce, expressing the results in terms of cosmic time t. Additionally, we introduce the state-finder pair to differentiate various dark energy models. Lastly, we investigate the behavior of the adiabatic speed of sound to assess the plausibility of the proposed cosmological bouncing scenario, formulating our analysis in terms of cosmic time t.

分形引力下的弹跳宇宙
在本研究中,我们通过分形重力透镜探索物质弹跳模型。我们使用一个非零参数作为比例因子。同时描述第三型奇异弹跳宇宙学演化。宇宙弹跳以这样一种方式发生,弹跳点恰好与III型奇点重合。我们在FRW背景下推导了相关的场方程。此外,我们还得到了减速参数、压力、密度和状态方程参数在宇宙时间t下的表达式。我们还分析了弹跳附近的零能和强能条件的违反,并用宇宙时间t来表示结果。此外,我们引入了状态查找器对来区分各种暗能量模型。最后,我们研究了绝热声速的行为,以评估所提出的宇宙弹跳情景的合理性,并根据宇宙时间t制定了我们的分析。
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来源期刊
Journal of the Korean Physical Society
Journal of the Korean Physical Society PHYSICS, MULTIDISCIPLINARY-
CiteScore
1.20
自引率
16.70%
发文量
276
审稿时长
5.5 months
期刊介绍: The Journal of the Korean Physical Society (JKPS) covers all fields of physics spanning from statistical physics and condensed matter physics to particle physics. The manuscript to be published in JKPS is required to hold the originality, significance, and recent completeness. The journal is composed of Full paper, Letters, and Brief sections. In addition, featured articles with outstanding results are selected by the Editorial board and introduced in the online version. For emphasis on aspect of international journal, several world-distinguished researchers join the Editorial board. High quality of papers may be express-published when it is recommended or requested.
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