Reconstruction of aether scalar tensor theory for variouscosmological scenarios* * Supported by the National Natural Science Foundation of China (11975072, 11875102, 11835009), National SKA Program of China (2022SKA0110200, 2022SKA0110203), Shaanxi Provincial Education Department (21JK0556), and Shaanxi Provincial Department of Science and Technology (2023-JC-QN-0077)

IF 3.6 2区物理与天体物理 Q1 PHYSICS, NUCLEAR

中国物理C Pub Date : 2024-04-01 DOI:10.1088/1674-1137/ad2360

Qi-Ming Fu, Meng-Ci He, Tao-Tao Sui, Xin Zhang

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引用次数: 0

Abstract

In this paper, we present several explicit reconstructions for the aether scalar tensor (AeST) theory derived from the background of the Friedmann-Lemaître-Robertson-Walker cosmological evolution. It is shown that the Einstein-Hilbert Lagrangian with a positive cosmological constant is the only Lagrangian capable of accurately replicating the exact expansion history of the Λ cold dark matter (ΛCDM) universe filled solely with dust-like matter. However, the ΛCDM-era can be produced within the framework of the AeST theory for some other fluids, including a perfect fluid with

, multifluids, and nonisentropic perfect fluids. Moreover, we demonstrate that the ΛCDM-era can be replicated with no real matter field for the AeST theory. The cosmic evolution resulting from both the power-law and de-Sitter solutions can also be obtained.

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重构各种宇宙学情景下的乙太标量张量理论* * 国家自然科学基金资助项目（11975072, 11875102, 11835009）、国家SKA项目（2022SKA0110200, 2022SKA0110203）、陕西省教育厅项目（21JK0556）和陕西省科技厅项目（2023-JC-QN-0077）资助

在本文中，我们介绍了从弗里德曼-勒梅特尔-罗伯逊-沃克宇宙学演化背景中得出的乙太标量张量（AeST）理论的几种明确重建。研究表明，具有正宇宙学常数的爱因斯坦-希尔伯特拉格朗日是唯一能够精确复制Λ冷暗物质（ΛCDM）宇宙膨胀历史的拉格朗日。然而，在AeST理论的框架内，ΛCDM时代可以在其他流体中产生，包括具有、多流体和非各向异性完美流体的完美流体。此外，我们还证明，在没有真实物质场的情况下，AeST 理论也可以复制Λ CDM 时代。我们还可以得到幂律解和德-西特解所产生的宇宙演化。

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

中国物理C 物理-物理：核物理

CiteScore

6.50

自引率

8.30%

发文量

8976

审稿时长

1.3 months

期刊介绍： Chinese Physics C covers the latest developments and achievements in the theory, experiment and applications of: Particle physics; Nuclear physics; Particle and nuclear astrophysics; Cosmology; Accelerator physics. The journal publishes original research papers, letters and reviews. The Letters section covers short reports on the latest important scientific results, published as quickly as possible. Such breakthrough research articles are a high priority for publication. The Editorial Board is composed of about fifty distinguished physicists, who are responsible for the review of submitted papers and who ensure the scientific quality of the journal. The journal has been awarded the Chinese Academy of Sciences ‘Excellent Journal’ award multiple times, and is recognized as one of China''s top one hundred key scientific periodicals by the General Administration of News and Publications.