摘要
在五维大反弹宇宙学模型框架下,通过给定三种不同的暗能量有效态方程,确定了在该模型中起重要作用的函数f(z),从而描述了五维大反弹模型中相关的宇宙学量随红移量z的演化.研究表明,与情形Ⅰ中有效态方程相对应的宇宙学量的演化规律和当前天文观测数据符合最好.
Based on the five-dimensional cosmological model with a big bounce, by using the forms of the effective equation of state for dark energy, the expression of the interesting function f ( z ) is given in this model. Furthermore, the evolution of some cosmological quantities with the redshift z is presented. In addition, it is shown that the evolution of the dimensionless density parameters Ωdm, Ωde and deceleration parameter q for the first case is the best fit one, that consists with the present observations.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2008年第4期2621-2626,共6页
Acta Physica Sinica
基金
国家自然科学基金(批准号:10475036)
辽宁省教育厅高等学校科研基金(批准号:05L215,2007T087)资助的课题~~
关键词
大反弹宇宙学模型
暗能量
态方程
big bounce model in universe, dark energy, equation of state