Inflation with a Smooth Constant-Roll to Constant-Roll Era Transition

Understand

In this paper we study canonical scalar field models with a varying second slow-roll parameter, that allow transitions between constant-roll eras.

• In the models with two constant-roll eras it is possible to avoid fine-tunings in the initial conditions of the scalar field.
• We mainly focus on the stability of the resulting solutions and we also investigate if these solutions are attractors of the cosmological system.
• We shall calculate the resulting scalar potential and by using a numerical approach, we examine the stability and attractor properties of the solutions.