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f (((Q) 重力作为一个可能的解决方案的H0和S8紧张与DESI DR2的压力
N S Kavya1, Sai Swagat Mishra2, P K Sahoo3
1Center for Mathematical Needs, Department of Mathematics, CHRIST (Deemed to be University), Bengaluru, 560029, India.
Scientific reports
|October 20, 2025
概括
这项研究探讨了一个新的f(Q) 重力模型来解决宇宙学紧张关系,特别是H0和sigma8差异. 通过结合引力波数据,该模型在缓解这些紧张局势方面显示出有希望的结果,为了解宇宙演变提供了潜在的解决方案.
科学领域:
- 宇宙学的宇宙学是什么?
- 理论物理 理论物理
- 引力物理 引力物理
背景情况:
- 宇宙学张力,特别是在H0和sigma8测量中,在当前的宇宙进化模型中构成了重大挑战.
- 由于各种观测调查出现了差异,因此需要新的理论框架.
研究的目的:
- 调查对称远程平行引力的潜力,特别是f(Q) 模型,以缓解宇宙学张力.
- 用最近的宇宙学数据,包括引力波来限制f(Q) 重力模型.
- 分析声音地平线与普朗克结果的一致性.
主要方法:
- 使用数据集的组合来限制f(Q) 引力模型:引力波数据 (标准警报器),DESI巴里翁声波振荡 (BAO),红移空间扭曲,宇宙计时器,Pantheon+SH0ES和宇宙微波背景数据.
- 使用统计马尔科夫链蒙特卡洛 (MCMC) 分析来研究后期宇宙进化和分析宇宙参数概况.
- 检查声音地平线与普朗克结果的一致性.
主要成果:
- 当f(Q) 引力模型被包括引力波在内的组合数据集所限制时,与当前的观测趋势相比,它显示了较小的张力大小.
- 该模型成功地减轻了H0和sigma8的张力,表明其作为解决方案的潜力.
- 对宇宙学参数的分析揭示了在拟议框架内的一致的形状.
结论:
- 考虑的f(Q) 重力模型为缓解当前宇宙学紧张局势提供了一个可行的解决方案.
- 使用引力波数据与其他宇宙探测器一起,为研究暗能量和后期宇宙加速提供了一个强大的工具.
- f (Q) 模型是宇宙学的进一步理论和观测研究的有希望的候选者.
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