Abstract
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 Ε; is small, but the second Hubble slow roll parameter η 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-η constant roll solutions are attractors or are also a class of transient solutions. In this paper we show that the large-η constant roll solutions do in fact represent transient solutions by performing stability analysis on the exact analytic (large-η) constant roll solutions.
| Original language | English |
|---|---|
| Article number | 063 |
| Journal | Journal of Cosmology and Astroparticle Physics |
| Volume | 2019 |
| Issue number | 9 |
| DOIs | |
| State | Published - Sep 27 2019 |
Keywords
- cosmological parameters from CMBR
- cosmological perturbation theory
- ination
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