Oscillating Quintom Model with Time Periodic Varying Deceleration Parameter  

作　　者：沈明 赵亮 

机构地区：[1]College of Mathematics and Computer Science, Fuzhou University, Fuzhou 350108 [2]Department of Mathematics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016

出　　处：《Chinese Physics Letters》2014年第1期18-20,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 11101085, and Fujian Provincial Natural Science Foundation of China under Grant No 2011J05004.

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 Ftobertson 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.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 Ftobertson 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.

分 类 号：P159[天文地球—天文学] TS104.1[轻工技术与工程—纺织工程]