摘要
合理解释宇宙大尺度结构的早期宇宙暴涨理论，成功地阐明所观测到的甚早期宇宙物质密度不均匀性和宇宙微波背景的涨落，是一个能解决标准热－大－爆炸理论中紧迫难题及原初物质密度涨落起源的优选理论［１］ ．对一个合理的暴涨模型，在暴涨阶段，其势至少必须在暴涨子演化方向非常平坦．构建一个合理暴涨模型或暴涨势，必须考虑所有已知的天文观测结果．对目前一个仍未充分研究的含４ 次方自相互作用项的一般树图杂化暴涨模型势，我们做了如何通过已观测到的天文物理数据和即将由ＭＡＰ和ＰＬＡＮＣＫ 卫星实验提供的更高精度的数据［１４］，以及宇宙自洽性要求，约束模型中的待定参数．发现一般树图的Ｈｙｂｒｉｄ 暴涨模型的４ 次方自相互作用项耦合常数需要精细微调．
The early Universe inflation is known as a promisinig theory to explain the origin of large scale structure of the Universe, and an established causal theory for the origin of primordial density fluctuations which may interpret the observed density inhomogeneities and cosmic microwave fluctuations in the very early Universe [11] . This theoretical framework can solve the early Universe pressing problems in the standard Hot Big Bang theory [1] . For a resonable inflation model, the potential during inflation must be very flat in, at least, the direction of the inflation. To construct such a reasonable inflation model, or the inflation potential, all the known related astrophysical observations should be explained within it. For a general tree level hybrid inflation potential which has not been fully discussed so far to the quartic term, the parameters in it show how it is constrained by the observed astrophysics data and by the more accurate data to be obtained by the MAP and PLANCK setellite missions, as well as by the consistent cosmology requirements [4] . We find the self coupling constant in the quartic term is tiny and needs fine tunning.
出处
《南开大学学报（自然科学版）》
CAS
CSCD
北大核心
1999年第3期104-110,共7页
Acta Scientiarum Naturalium Universitatis Nankaiensis
关键词
天文观测
物理模型
卫星观测值
暴涨模型
粒子
inflation model
supersymmetry particle physics model
COBE normalization
power spectral
