Oscillating Quintom Model with Time Periodic Varying Deceleration Parameter

被引：24

作者：

Shen Ming ^{[1
]}

Zhao Liang ^{[2
]}

机构：

[1] Fuzhou Univ, Coll Math & Comp Sci, Fuzhou 350108, Peoples R China

[2] Nanjing Univ Aeronaut & Astronaut, Dept Math, Nanjing 210016, Peoples R China

来源：

CHINESE PHYSICS LETTERS | 2014年 / 31卷 / 01期

基金：

中国国家自然科学基金;

关键词：

PROBE WMAP OBSERVATIONS; DARK ENERGY; COSMOLOGICAL MODELS; CONSTRAINTS; UNIVERSE;

D O I：

10.1088/0256-307X/31/1/010401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose a new law for the deceleration parameter that varies periodically with time. According to the law, we give a model of the oscillating universe with quintom matter in the framework of a 4-dimensional Friedmann-Robertson-Walker background. We find that, in the model, the Hubble parameter oscillates and keeps positive. The universe undergoes decelerating expansion and accelerating expansion alternately without singularity.

引用

页数：3

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