发表机构
Nuclear Department, ENEA - C. R. Frascati; Physics Department, “Sapienza” University of Rome; Division of Science, National Astronomical Observatory of Japan; The Graduate University for Advanced Studies (SOKENDAI); Space Science Institute(意大利国家新能源与可再生能源署弗拉斯卡蒂研究中心核物理部; 罗马大学物理系; 日本国立天文台科学部; 综合研究大学院大学; 太空科学研究所)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
本文通过分析Pantheon样本数据,提出哈勃常数随红移变化可由演化暗能量解释,并发现其与类幻影暗能量相关。
AI 中文摘要
我们讨论了观测到的哈勃常数随红移变化的现象,并从可能的潜在物理场景角度进行了解释。假设像ΛCDM模型那样,物质和暗能量组分之间没有直接相互作用,我们得出结论:宇宙学动力学的物理内容总是可以用演化暗能量范式来表示。我们讨论了幂律形式的哈勃常数变化情况,以及一个优化拟合模型的情况,两者均使用Ia型超新星数据的Pantheon样本分箱进行研究。这两种情况被发现与类幻影的演化暗能量相关。
英文摘要
We discuss the interpretation of an observed running Hubble constant with the redshift, in terms of the possible underlying physical scenario. Assuming, like in the $Λ$CDM model, that the matter and dark energy components do not directly interact, we arrive at the conclusion that the physical content of the cosmological dynamics can always be represented with an evolutionary dark energy paradigm. We discuss both the case of the power-law running Hubble constant, and that of an optimized fitting model, both studied with the binned Pantheon Sample of the Type Ia Supernovae data. These two cases turn out to be associated with a phantom-like evolutionary dark energy.
Comments5 pages, 2 figure
Journal refPhys. Dark Univ. 54, 102451 (2026)
DOI:10.1016/j.dark.2026.102451