\(\varLambda \)重力-热力学猜想的CDM模型：DESI 2024后的观测约束

IF 4.2 2区物理与天体物理 Q2 PHYSICS, PARTICLES & FIELDS

The European Physical Journal C Pub Date : 2025-01-22 DOI:10.1140/epjc/s10052-025-13781-2

N. Shahhoseini, M. Malekjani, A. Khodam-Mohammadi

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引用次数: 0

摘要

在基于Tsallis熵面积关系的重力-热力学猜想的背景下，我们研究了标准的\(\varLambda \) CDM宇宙学，并检查了与它的一些潜在偏差。利用最近更新的几何数据集，包括DESI BAO测量（2024年），普朗克CMB各向异性测量（2018年）和SNIa的Pantheon+目录（2022年），我们通过Tsallis宇宙学窗口进行了彻底的分析。在第一步中，我们的分析表明，单独使用DESI BAO数据、单独使用Pantheon+数据或两者结合使用时，与标准模型没有显著偏差。在下一步中，我们通过将CMB数据添加到我们的分析中来合并所有数据集，表明在Tsallis宇宙学框架内与标准模型的潜在偏差。在重子拖拽时期将普朗克置于声视界之前，我们观察到标准模型的支持以及哈勃常数和普朗克值的约束之间的一致性。最后，我们使用赤池信息准则（Akaike Information Criterion， AIC）比较了Tsallis宇宙论和\(\varLambda \) CDM宇宙论。

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\(\varLambda \)CDM model against gravity-thermodynamics conjecture: observational constraints after DESI 2024

In the context of the gravity-thermodynamics conjecture based on the Tsallis entropy-area relation, we investigate the standard \(\varLambda \)CDM cosmology and examine some potential deviations from it. Utilizing recent updates from geometrical datasets, including the DESI BAO measurements (2024), Planck CMB anisotropy measurements (2018), and the Pantheon+ catalogue for SNIa (2022), we conduct a thorough analysis via the window of Tsallis cosmology. In the first step, our analysis reveals no significant deviation from the standard model when using DESI BAO data alone, Pantheon+ data alone, or a combination of both. In the next step, we incorporate all datasets by adding the CMB data to our analysis, indicating a potential deviation from the standard model within the framework of Tsallis cosmology. Imposing the Planck prior to the sound horizon at the baryon drag epoch, we observe support for the standard model and consistency between our constraints on the Hubble constant and the Planck value. Finally, we compare the Tsallis and \(\varLambda \)CDM cosmologies using the Akaike Information Criterion (AIC).

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来源期刊

The European Physical Journal C 物理-物理：粒子与场物理

CiteScore

8.10

自引率

15.90%

发文量

1008

审稿时长

2-4 weeks

期刊介绍： Experimental Physics I: Accelerator Based High-Energy Physics Hadron and lepton collider physics Lepton-nucleon scattering High-energy nuclear reactions Standard model precision tests Search for new physics beyond the standard model Heavy flavour physics Neutrino properties Particle detector developments Computational methods and analysis tools Experimental Physics II: Astroparticle Physics Dark matter searches High-energy cosmic rays Double beta decay Long baseline neutrino experiments Neutrino astronomy Axions and other weakly interacting light particles Gravitational waves and observational cosmology Particle detector developments Computational methods and analysis tools Theoretical Physics I: Phenomenology of the Standard Model and Beyond Electroweak interactions Quantum chromo dynamics Heavy quark physics and quark flavour mixing Neutrino physics Phenomenology of astro- and cosmoparticle physics Meson spectroscopy and non-perturbative QCD Low-energy effective field theories Lattice field theory High temperature QCD and heavy ion physics Phenomenology of supersymmetric extensions of the SM Phenomenology of non-supersymmetric extensions of the SM Model building and alternative models of electroweak symmetry breaking Flavour physics beyond the SM Computational algorithms and tools...etc.