Stochastic inflation with an extremely large number of e -folds
作者: Naoya KitajimaYuichiro TadaFuminobu Takahashi
作者单位: 1Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai, 980-8578 Japan
2Department of Physics, Tohoku University, Sendai, 980-8578 Japan
3Department of Physics, Nagoya University, Nagoya 464-8602, Japan
4Kavli IPMU (WPI), UTIAS, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
刊名: Physics Letters B, 2020, Vol.800
来源数据库: Elsevier Journal
DOI: 10.1016/j.physletb.2019.135097
关键词: Stochastic inflationEternal inflationAxionTU-1090IPMU19-0102
原始语种摘要: Abstract(#br)We propose a class of single-field, slow-roll inflation models in which a typical number of e -folds can be extremely large. The key point is to introduce a very shallow local minimum near the top of the potential in a hilltop inflation model. In particular, a typical number of e -folds is enhanced if classical behavior dominates around the local minimum such that the inflaton probability distribution is drifted to the local minimum as a whole. After the inflaton escapes from the local minimum due to the stochastic dynamics, the ordinary slow-roll inflation follows and it can generate the primordial density perturbation consistent with observation. Interestingly, our scenario inherits the advantages of the old and new inflation: the typical e -folds can be extremely large as...
全文获取路径: Elsevier  (合作)
影响因子:4.569 (2012)

  • 极小 极端
  • inflation 膨胀
  • number 号码
  • large 大的
  • stochastic 随机的
  • local 局部的
  • extremely 极端
  • minimum 极端
  • typical 典型的
  • particular 细致的
  • reach 河区