以格兰达-奥利弗罗斯为红外截止点的新查利斯全息暗能量

IF 1.1 4区 物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY Canadian Journal of Physics Pub Date : 2024-05-09 DOI:10.1139/cjp-2023-0286
U. Sharma, Pankaj, Nisha Muttathazhathu Ali, Krishna Kant Mishra
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引用次数: 0

摘要

在当前的研究中,我们以格兰达-奥利弗罗斯为红外截止点,利用指定的尺度因子[计算公式:见正文],构建了一个非相互作用新查利斯全息暗能量理论模型。在适当的假设条件下,随时间变化的减速参数产生了这个尺度因子。然后研究了该模型的减速参数、状态方程参数、密度参数和抽动参数的特征。根据我们的研究结果,宇宙有一个正常的热历史,暗物质和暗能量时代相继出现,直到暗能量最终在遥远的未来完全占据宇宙。此外,我们还研究了利用我们的模型表示宇宙加速膨胀的势能和压力的演变。我们研究了状态探测器参数的演化轨迹,这与ΛCDM模型是一致的。
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New Tsallis holographic dark energy with Granda–Oliveros as IR-cutoff
In the current study, a theoretical model for non-interacting new Tsallis holographic dark energy is constructed using the Granda–Oliveros as the IR cutoff with specified scale factor [Formula: see text]. The time-dependent deceleration parameter, with appropriate assumptions, yields this scale factor. The features of the deceleration parameter, equation of state parameter, density parameter, and jerk parameter are then investigated for this model. According to our findings, the cosmos has a normal thermal history, dark matter and dark energy eras occurring one after the other until dark energy eventually takes over entirely in the far future. Additionally, the evolution of the potential and pressure to indicate the universe’s accelerated expansion by using our model are studied. We investigate the evolution trajectory of statefinder parameters, which is consistent with ΛCDM model.
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来源期刊
Canadian Journal of Physics
Canadian Journal of Physics 物理-物理:综合
CiteScore
2.30
自引率
8.30%
发文量
65
审稿时长
1.7 months
期刊介绍: The Canadian Journal of Physics publishes research articles, rapid communications, and review articles that report significant advances in research in physics, including atomic and molecular physics; condensed matter; elementary particles and fields; nuclear physics; gases, fluid dynamics, and plasmas; electromagnetism and optics; mathematical physics; interdisciplinary, classical, and applied physics; relativity and cosmology; physics education research; statistical mechanics and thermodynamics; quantum physics and quantum computing; gravitation and string theory; biophysics; aeronomy and space physics; and astrophysics.
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