基于修正的时移关系的宇宙演化可以避免引入宇宙常数

IF 1.8 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS
Elmo Benedetto, Luca D’Errico, Antonio Feoli
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引用次数: 0

摘要

受近期文献的启发,我们研究了爱因斯坦-德-西特宇宙学模型,以及红移和时间膨胀之间关系的广义化(\delta t_{0} = \delta t_{e} (1+z)^{n})。我们发现,这个模型与1048个超新星的实验数据相吻合,与标准的(\Lambda \mathrm{CDM}\)模型具有竞争性,而且不需要引入非零宇宙学常数。由于作为宇宙构成主要成分的暗能量的存在仍在争论之中,我们提出了我们的形式主义,作为对宇宙学情景的另一种描述。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
An evolution of the universe based on a modified time-redshift relation can avoid the introduction of a cosmological constant

Inspired by the recent literature, we study the Einstein–de Sitter cosmological model coupled with a generalization of the relation between the redshift and time dilation of the kind \(\delta t_{0} = \delta t_{e} (1+z)^{n}\). We find that this model fits the experimental data regarding 1048 supernovae, in a way which is competitive with the standard \(\Lambda \mathrm{CDM}\) model and without the need of introducing a non-zero cosmological constant. Since the existence of dark energy, as a main ingredient of the composition of the cosmos, is still under debate, we propose our formalism as an example of an alternative description of the cosmological scenario.

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来源期刊
Astrophysics and Space Science
Astrophysics and Space Science 地学天文-天文与天体物理
CiteScore
3.40
自引率
5.30%
发文量
106
审稿时长
2-4 weeks
期刊介绍: Astrophysics and Space Science publishes original contributions and invited reviews covering the entire range of astronomy, astrophysics, astrophysical cosmology, planetary and space science and the astrophysical aspects of astrobiology. This includes both observational and theoretical research, the techniques of astronomical instrumentation and data analysis and astronomical space instrumentation. We particularly welcome papers in the general fields of high-energy astrophysics, astrophysical and astrochemical studies of the interstellar medium including star formation, planetary astrophysics, the formation and evolution of galaxies and the evolution of large scale structure in the Universe. Papers in mathematical physics or in general relativity which do not establish clear astrophysical applications will no longer be considered. The journal also publishes topically selected special issues in research fields of particular scientific interest. These consist of both invited reviews and original research papers. Conference proceedings will not be considered. All papers published in the journal are subject to thorough and strict peer-reviewing. Astrophysics and Space Science features short publication times after acceptance and colour printing free of charge.
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