标题： inflation阶段与暗能量的作用：重访 显示英文标题

标题： Inflationary phase and role of dark energy: Revisited

摘要： 通过对一个与标量场相关的玩具模型（称为{\it 暗能量场}）的提出，研究了宇宙的暴涨阶段。 在所述时期的能量密度势能部分假设包含一个恒定的真空能量密度部分和一个包含暴胀子的可变部分。 该模型的主要思想是在闭合宇宙框架下构建的，其基于暴胀子是空间取向的根本原因这一事实。 根据此模型，在暴涨时期宇宙的膨胀不是近似而是完全呈指数增长的性质，因此可以解决一些基本难题，例如平坦性和视界问题。 还预测势能中的恒定能量密度部分可能与暗能量有关，这最终不同于真空能量，至少在宇宙的暴涨阶段是如此。 然而，该模型也为暴涨时代的结束留出了余地。 显示英文摘要

摘要： The inflationary phase of the Universe is explored by proposing a toy model related to the scalar field, termed as {\it inflaton}. The potential part of the energy density in the said era is assumed to have a constant vacuum energy density part and a variable part containing the inflaton. The prime idea of the proposed model constructed in the framework of the closed Universe is based on a fact that the inflaton is the root cause of the orientation of the space. According to this model the expansion of the Universe in the inflationary epoch is not approximately rather exactly exponential in nature and thus it can solve some of the fundamental puzzles, viz. flatness as well as horizon problems. It is also predicted that the constant energy density part in the potential may be associated to the dark energy, which is eventually different from the vacuum energy, at least in the inflationary phase of the Universe. However, the model keeps room for the end of inflationary era.