A bound system in the expanding universe with modified holographic Ricci dark energy and dark matter

A bound system in the expanding universe with modified holographic Ricci dark energy and dark matter
复制标题

膨胀宇宙中的束缚系统,具有修改后的全息里奇暗能量和暗物质

DOI:
10.1007/s10509-014-2161-y
复制
发表时间:
2015-02
期刊:
ASTROPHYSICS AND SPACE SCIENCE(2014) 355:2161
影响因子:
--
通讯作者:
Peng-Fei Duan
Peng-Fei Duan
中科院分区:
其他
文献类型:
--
作者:
En-Kun Li;Yu Zhang;Jin-Ling Geng;Peng-Fei Duan

文献摘要

参考文献

被引文献

相似文献

本文研究了膨胀背景下束缚系统的演化。背景是用修正的全息暗能量模型描述的FRW宇宙,其状态方程参数随时间变化,可以穿过幻影边界。为了研究束缚系统的演化,考虑了一种插值度量,并在此基础上给出了测试粒子的测地线。由测地线导出了运动方程和有效势。通过对银河系束缚系统中有效势和实验粒子半径演化的研究,发现银河系在束缚系统中会经历三个阶段:从奇点开始膨胀;在盘状体中停留一段时间;未来大撕裂。通过对临界角动量的分析,我们发现随着时间的推移,测试粒子从中心质量逃逸所需的角动量越来越小。
The evolution of a bound system in the expanding background has been investigated in this paper. The background is described by a FRW universe with the modified holographic dark energy model, whose equation of state parameter changes with time and can cross the phantom boundary. To study the evolution of the bound system, an interpolating metric is considered, and on this basis the geodesics of a test particle are given. The equation of motion and the effective potential are also derived from the geodesics. By studying the effective potential and the evolution of the radius of a test particle in the bound system of the Milky Way galaxy, we have found that the galaxy would go through three stages: expands from a singular point; stays in a discoid for a period of time; big rip in the future. With the help of analyzing the critical angular momentum, we find that the test particle needs less angular momentum to escape from the center mass as time passes.
DOI: 10.1103/physrevd.76.063510
发表时间: 2007-07
期刊: Physical Review D
影响因子: 5
作者:
V. Faraoni;Audrey Jacques
通讯作者: V. Faraoni;Audrey Jacques
DOI: 10.1103/physrevd.89.123009
发表时间: 2014-06-25
期刊: PHYSICAL REVIEW D
影响因子: 5
作者:
Ghaffari, S.;Dehghani, M. H.;Sheykhi, A.
通讯作者: Sheykhi, A.
DOI: 10.1103/physrevd.70.123529
发表时间: 2004-10
期刊: Physical Review D
影响因子: 5
作者:
S. Nesseris;L. Perivolaropoulos
通讯作者: S. Nesseris;L. Perivolaropoulos
DOI: 10.1086/305956
发表时间: 1998-03
期刊: The Astrophysical Journal
影响因子: --
作者:
F. Cooperstock;V. Faraoni;D. Vollick
通讯作者: F. Cooperstock;V. Faraoni;D. Vollick
DOI: 10.1140/epjc/s10052-008-0858-1
发表时间: 2008-04
期刊: The European Physical Journal C
影响因子: --
作者:
Lixin Xu;Wenbo Li;Jianbo Lu
通讯作者: Lixin Xu;Wenbo Li;Jianbo Lu