Oscillating Quintom Model with Time Periodic Varying Deceleration Parameter

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2014,（1）
• 页码范围: 18-20
• 页数: 3页
• 语种: 英文
• DOI: 10.1088/0256-307X/31/1/010401

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 FriedmannRobertson-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.