具有对数状态方程的等熵欧拉系统的解析解

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

Modern Physics Letters A Pub Date : 2023-11-23 DOI:10.1142/s0217732323501559

Guangpu Lou, Jianwei Dong

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引用次数: 0

摘要

本文研究了具有对数状态方程的等熵欧拉系统的解析解，该系统被引入暗能量流体以研究晚期宇宙的动力学演化。通过使用一些等式，我们分别构建了一维情况、[公式：见正文]径向对称情况和三维圆柱对称情况下的一些解析解。在某些条件下，研究了集中和空化现象，并得到了一些全局解析解。

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Analytical solutions to the isentropic Euler system with the logarithmic equation of state

In this paper, we study the analytical solutions to the isentropic Euler system with the logarithmic equation of state, which has been introduced for the dark energy fluid to investigate the dynamical evolution of a late-time universe. By using some ansatz, we construct some analytical solutions for one-dimensional case, [Formula: see text]-dimensional radially symmetric case and three-dimensional cylindrically symmetric case, respectively. The concentration and cavitation phenomena are investigated and some global analytical solutions are obtained under some conditions.

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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.