Cosmological perturbations in a noncommutative braneworld inflation

被引：0

作者：

Kourosh Nozari ^{[1
]}

Siamak Akhshabi ^{[1
]}

机构：

[1] Department of Physics,Faculty of Basic Sciences,University of Mazandaran,P.O.Box 47416-95447,Babolsar,Iran

来源：

Research in Astronomy and Astrophysics | 2012年 / 12卷 / 06期

关键词：

early universe cosmology — cosmology theory;

D O I：

暂无

中图分类号：

P159 [宇宙学];

学科分类号：

070401 ;

摘要：

We use the smeared,coherent state picture of noncommutativity to study evolution of perturbations in a noncommutative braneworld scenario.Within the standard procedure of studying braneworld cosmological perturbations,we study the evolution of the Bardeen metric potential and curvature perturbations in this model.We show that in this setup,the early stage of the universe’s evolution has a transient phantom evolution with imaginary effective sound speed.

引用

页码：625 / 635

页数：11