2–6 Sept 2019
Europe/Zurich timezone

Dynamical Analysis of Attractor Behavior in Constant Roll Inflation

Not scheduled
25m

Description

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.

Primary authors

Michael Morse Wei-Chen Lin (University at Buffalo) William Kinney (Univ. at Buffalo, SUNY)

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