Constraints on oscillating Quintom from supernova, microwave background and galaxy clustering

被引：97

作者：

Xia, JQ ^{[1
]}

Feng, B ^{[1
]}

Zhang, XM ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

来源：

MODERN PHYSICS LETTERS A | 2005年 / 20卷 / 31期

基金：

中国国家自然科学基金;

关键词：

oscillating Quintom; supernova; CMB; LSS;

D O I：

10.1142/S0217732305017445

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider in this paper a simple oscillating Quintom model of dark energy which has two free parameters and an equation of state oscillating and crossing - 1. For low redshifts the equation of state of this model resembles itself similar to the linearly parametrized dark energy, however differs substantially at large redshifts. We fit our model to the observational data separately from the new high redshifts supernova observations from the HST/GOODS program and previous supernova, CMB and galaxy clustering. Our results show that because of the oscillating feature of our model the constraints from observations at large redshifts such as CMB become less stringent.

引用

页码：2409 / 2416

页数：8

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