Lambert $W$ 函数:宇宙学课堂中的新成员?
广义相对论与量子宇宙学
2020-01-03 v2
摘要
我们提出一种新颖的状态方程(EoS),用以解释平坦 Friedmann-Lemaitre-Robertson-Walker(FLRW)宇宙的演化历史。该状态方程的独特性在于它以一种特殊方式融入了 Lambert 函数。我们明确证明,在未知参数 与 取与观测相符的值时,宇宙的所有演化阶段均可被重现。此外,它还表明初始奇点不可避免,并断言宇宙的晚时期加速将永远持续。
引用
@article{arxiv.1908.11712,
title = {The Lambert $W$ function: A newcomer in the Cosmology class?},
author = {Subhajit Saha and Kazuharu Bamba},
journal= {arXiv preprint arXiv:1908.11712},
year = {2020}
}
备注
6 pages, 2 figures; v2: The quality of Fig. 1 has been improved, Acknowledgments updated, Several references corrected; To appear in Zeitschrift fur Naturforschung A; Author SS dedicates this paper to Professor Subenoy Chakraborty on the auspicious occasion of his 60th birthday