宇宙重新加热能标对微波背景辐射效应的研究  

A Study on the Effect of Reheating Energy Scale on CMB

作　　者：巩小博[1] 冯波[2] 王秀莲[2] 

机构地区：[1]北京大学物理系,北京100871 [2]中国科学院高能物理研究所,北京100039

出　　处：《高能物理与核物理》2003年第12期1074-1078,共5页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金 ( 10 0 470 0 4)资助~~

摘　　要：研究了暴涨宇宙学中重新加热能标 ρreh的不确定性对原初谱和宇宙微波背景辐射 (CMB)的效应 ,并着重指出了在谱指数跑动大的模型中CMB观测可以给出 ρreh一个很强的限制 .Inflation plays a significant role in interpreting current observations. Despite the success of inflation theory, the reheating energy scale ρ reh is largely uncertain today. This consequently induces uncertainty to the primordial spectrum when achieving primordial spectra from inflation models. In this paper, we study the effects of this uncertainty on the primordial spectrum and cosmic microwave background (CMB) radiation. For the primordial spectra with small running indices, our result shows that the effect is negligible if the inflation parameter V 0 can be normalized freely. But for models with large running indices, we find that ρ reh can be highly restricted by the CMB observations.

关 键 词：宇宙微波背景 辐射效应 暴涨宇宙学 重新加热能标 谱指数 高能物理学 扰动方程 

分 类 号：P162[天文地球—天文学]