Generalizing the Constant-roll Condition in Scalar Inflation

Understand

In this work we generalize the constant-roll condition for minimally coupled canonical scalar field inflation.

• Particularly, we shall assume that the scalar field satisfies the condition $\ddot{\phi}=\alpha (\phi) V'(\phi)$, and we derive the field equations under this assumption.
• We call the framework extended constant-roll framework.
• Accordingly we calculate the inflationary indices and the corresponding observational indices of inflation.