Semiclassical analysis of the tensor power spectrum in the Starobinsky inflationary model
Semiclassical analysis of the tensor power spectrum in the Starobinsky inflationary model
In this work, we calculate the tensor power spectrum and the tensor-to-scalar ratio [Formula: see text] within the frame of the Starobinsky inflationary model using the improved uniform approximation method and the third-order phase-integral method. We compare our results with those obtained with numerical integration and the slow-roll approximation to …