极小耦合于精华场的爱因斯坦引力新精确宇宙学解
广义相对论与量子宇宙学
2009-09-29 v5 天体物理学
摘要
假设哈勃展开参数与标量场时间导数之间存在线性关系，以导出包含两种流体的爱因斯坦引力精确解析宇宙学解：一种是普通物质的正压完美流体，另一种是解释宇宙暗能量的自相互作用标量场流体（精华场）。无需对自相互作用势的函数形式或标度因子行为做先验假设。这些作为哈勃参数与标量场时间导数线性关系假设的输出结果被得出。结果只能处理一类指数势及其组合。详细讨论了所得解对描述宇宙演化的相关性。还在正常精华模型框架内讨论了超加速膨胀的可能性。
引用
@article{arxiv.gr-qc/0210097,
title = {New exact cosmological solutions to Einstein's gravity minimally coupled to a Quintessence field},
author = {Olga Arias and Tame Gonzalez and Israel Quiros},
journal= {arXiv preprint arXiv:gr-qc/0210097},
year = {2009}
}
备注
10 pages, Revtex, 3 eps figures. Some misprints corrected. New references added. The full space of solution investigated in detail and the possibility to accomodate superaccelerated expansion (superquintessence) within the frame of normal quintessence models is also discussed. One figure removed