The little rip

被引：225

作者：

Frampton, Paul H. ^{[1
]}

Ludwick, Kevin J. ^{[1
]}

Scherrer, Robert J. ^{[2
]}

机构：

[1] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA

[2] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA

来源：

PHYSICAL REVIEW D | 2011年 / 84卷 / 06期

关键词：

HUBBLE-SPACE-TELESCOPE; FUTURE; SINGULARITIES; CONSTRAINTS; SUPERNOVAE; EQUATION; FATE;

D O I：

10.1103/PhysRevD.84.063003

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

examine models in which the dark energy density increases with time (so that the equation-of-state parameter w satisfies w < -1), but w -> -1 asymptotically, such that there is no future singularity. We refine previous calculations to determine the conditions necessary to produce this evolution. Such models can display arbitrarily rapid expansion in the near future, leading to the destruction of all bound structures (a "little rip"). We determine observational constraints on these models and calculate the point at which the disintegration of bound structures occurs. For the same present-day value of w, a big rip with constant w disintegrates bound structures earlier than a little rip.

引用

页数：5

共 28 条

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