Dynamical analysis of attractor behavior in constant roll inflation

被引:27
作者
Lin, Wei-Chen [1 ]
Morse, Michael J. P. [1 ]
Kinney, William H. [1 ,2 ]
机构
[1] SUNY Buffalo, Univ Buffalo, Dept Phys, Buffalo, NY 14260 USA
[2] Stockholm Univ, Dept Phys, Oskar Klein Ctr Cosmoparticle Phys, AlbaNova, S-10691 Stockholm, Sweden
来源
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2019年 / 09期
基金
美国国家科学基金会; 瑞典研究理事会;
关键词
inflation; cosmological perturbation theory; cosmological parameters from CMBR; PHASE-TRANSITION; UNIVERSE; FLATNESS; HORIZON;
D O I
10.1088/1475-7516/2019/09/063
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
There has been considerable recent interest in a new class of non-slow roll inflationary solutions known as constant roll inflation. Constant roll solutions are a generalization of the ultra-slow roll (USR) solution, where the first Hubble slow roll parameter epsilon is small, but the second Hubble slow roll parameter eta is not. While it is known that the USR solutions represent dynamical transients, there has been some disagreement in literature about whether or not large-eta constant roll solutions are attractors or are also a class of transient solutions. In this paper we show that the large-eta constant roll solutions do in fact represent transient solutions by performing stability analysis on the exact analytic (large-eta) constant roll solutions.
引用
收藏
页数:22
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