Transient accelerating scalar models with exponential potentials

• 作 者: Wen-Ping Cui Yang Zhang Zheng-
• 机 构: KeyLaboratoryforResearchinGalaxiesandCosmology
• 出 处: 天文和天体物理学研究：英文版
• 发表日期: 2013年6期
• 关键词: 大爆炸宇宙学 型号 瞬态 早期阶段 标量场 模型 暗能量 减速 cosmology cosmological parameters -- cosmology t
• 基金项目: W. P. Cui＇s work has been part of the Undergraduate Research Project of USTC. Y. Zhang is supported by the National Natural Science Foundation of China （Grant No. 10773009）, SRFDP and CAS.

We study a known class of scalar dark energy models in which the potential has an exponential term and the current accelerating era is transient. We find that, although a decelerating era will return in the future, when extrapolating the model back to ear