具有随时间变化的周期性减速参数的振荡五子棋方案

IF 1.5 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Modern Physics Letters A Pub Date : 2023-12-09 DOI:10.1142/s0217732323501717

M. Ilyas, A. R. Athar

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引用次数: 0

摘要

在本文中，我们以不同的方式引入了减速参数[公式：见正文]，提出了一个现代定律。根据这一定律，我们提出了一个时间周期[公式：见正文]。此外，我们还利用这一定律建立了一个模型，在这个模型中，宇宙在四维 FLRW 度量背景下与五子物质一起振荡。利用这个模型，我们得到了振荡哈勃参数[公式：见正文]，该参数保持为正值。因此，宇宙周期性地经历减速膨胀和加速膨胀，避免了奇点的出现。

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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Oscillating quintom scenario with time-dependent periodic deceleration parameter

In this paper, we introduced the deceleration parameter [Formula: see text] in a different manner by proposing a modern law. According to this law, we suggested a time-periodic [Formula: see text]. Furthermore, we used this law to develop a model in which the universe oscillates with quintom matter in a four-dimensional FLRW metric background. Using this model, we obtained the oscillating Hubble parameter [Formula: see text], which remains positive. Consequently, the universe undergoes decelerating expansion and accelerating expansion periodically, avoiding singularities.

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来源期刊

Modern Physics Letters A 物理-物理：核物理

CiteScore

3.10

自引率

7.10%

发文量

186

审稿时长

3 months

期刊介绍： This letters journal, launched in 1986, consists of research papers covering current research developments in Gravitation, Cosmology, Astrophysics, Nuclear Physics, Particles and Fields, Accelerator physics, and Quantum Information. A Brief Review section has also been initiated with the purpose of publishing short reports on the latest experimental findings and urgent new theoretical developments.