广义 Chaplygin 气体主导宇宙中球对称 'top-hat' 坍缩
宇宙学与河外天体物理
2013-05-30 v2
摘要
我们扩展了先前关于广义 Chaplygin 气体 (gCg) 主导宇宙中球对称 'top-hat' 坍缩 (SC-TH) 框架的研究工作。此处我们允许系统中所有能量组分参与坍缩。我们分析了 gCg 模型不同参数 选择下坍缩的非线性阶段，引入了所谓有效声速 的精确表述。我们表明，在 SC-TH 框架内，结构增长随 值的增大而加快。
引用
@article{arxiv.1110.6205,
title = {Spherical `Top-Hat' Collapse in general Chaplygin gas dominated universes},
author = {R. A. A. Fernandes and J. P. M. de Carvalho and A. Yu. Kamenshchik and U. Moschella and A. da Silva},
journal= {arXiv preprint arXiv:1110.6205},
year = {2013}
}
备注
17 pages, 5 figures, submitted to Phys. Rev. D. Changes: A new table (Table II) and a new paragraph (at the end of section III.B), were added; Fig. 5 was redrawn and split in two sub-plots, 5a and 5b. We have added a few comments, and a reference, in the introduction; Slight text modifications and typos correction