On Algebraic Dependence of Cosmological Parameters

IF 1.2 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Gravitation and Cosmology Pub Date : 2023-11-23 DOI:10.1134/S0202289323040163

Žarko Mijajlović, Danijela Branković

引用次数: 1

Abstract

We consider the inverse function of the scale factor \(a(t)\) of the Friedmann equations, discussing also the asymptotics of cosmological parameters under various assumptions on the \(\Lambda\)CDM model. Using algebraic dependencies between the cosmological parameters and the representation of the inverse function of the scale factor \(a(t)\) as an elliptic integral with a parameter, we compute in a uniform way some special events in the universe’s evolution.

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论宇宙学参数的代数依赖性

我们考虑了Friedmann方程的尺度因子\(a(t)\)的反函数，并讨论了在\(\Lambda\) CDM模型的各种假设下宇宙学参数的渐近性。利用宇宙学参数与尺度因子\(a(t)\)的反函数表示之间的代数依赖关系作为带参数的椭圆积分，我们以统一的方式计算了宇宙演化中的一些特殊事件。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Gravitation and Cosmology ASTRONOMY & ASTROPHYSICS-

CiteScore

1.70

自引率

22.20%

发文量

审稿时长

>12 weeks

期刊介绍： Gravitation and Cosmology is a peer-reviewed periodical, dealing with the full range of topics of gravitational physics and relativistic cosmology and published under the auspices of the Russian Gravitation Society and Peoplesâ€™ Friendship University of Russia. The journal publishes research papers, review articles and brief communications on the following fields: theoretical (classical and quantum) gravitation; relativistic astrophysics and cosmology, exact solutions and modern mathematical methods in gravitation and cosmology, including Lie groups, geometry and topology; unification theories including gravitation; fundamental physical constants and their possible variations; fundamental gravity experiments on Earth and in space; related topics. It also publishes selected old papers which have not lost their topicality but were previously published only in Russian and were not available to the worldwide research community