来自修正引力的新兴类宇宙的原始宇宙学：用遗传算法重建和优化现象学

IF 1.8 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

International Journal of Modern Physics D Pub Date : 2024-02-05 DOI:10.1142/s0218271823501146

V. K. Oikonomou, Gregory Kafanelis

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引用次数: 0

摘要

广义相对论在上个世纪一直是万有引力理论的主流范式，它能够高精度地解释大量天文和宇宙学观测结果。广义相对论面临的一个主要挑战是，它预言宇宙的起点是一个奇点。在本文中，我们将根据普朗克 2018 数据和 BBN 约束条件，探讨文献中一个著名的观点--新兴宇宙及其可行性。

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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Primordial cosmology of an emergent-like universe from modified gravity: Reconstruction and phenomenology optimization with a genetic algorithm

General relativity has been the dominant paradigm theory of gravity for the last century, it manages to explain a plethora of astronomical and cosmological observations with high accuracy. A major challenge faced by general relativity is, that it predicts a singularity as the beginning of our universe. In this paper, we shall explore a well-known idea in the literature that of the emergent universe and its viability according to Planck 2018 data and BBN constraints.

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来源期刊

International Journal of Modern Physics D 地学天文-天文与天体物理

CiteScore

3.80

自引率

9.10%

发文量

181

审稿时长

4-8 weeks

期刊介绍： Gravitation, astrophysics and cosmology are exciting and rapidly advancing fields of research. This journal aims to accommodate and promote this expansion of information and ideas and it features research papers and reviews on theoretical, observational and experimental findings in these fields. Among the topics covered are general relativity, quantum gravity, gravitational experiments, quantum cosmology, observational cosmology, particle cosmology, large scale structure, high energy astrophysics, compact objects, cosmic particles and radiation.