Large- η constant-roll inflation is never an attractor

Slow-roll solutions to inflationary potentials have been widely believed to be the only universal attractor. Over the past few years there has been growing interest in a new class of inflationary models known as constant-roll inflation. Constant-roll solutions are a generalization of "ultraslow roll" dynamics, where the first slow-roll parameter is small, but the second slow-roll parameter η is larger than unity. In ultraslow roll inflation, the large-η solution is a dynamical transient, relaxing exponentially to the attractor de Sitter solution. In the constant-roll generalization, recent papers have concluded that constant-roll inflation represents a new class of nonslow roll attractor solutions. In this paper we show that these attractor solutions are actually the usual slow-roll attractor, disguised by a parameter duality, and that the large-η solutions, as in the case of ultraslow roll, represent a dynamical transient.