Semiclassical analysis of the Starobinsky inflationary model

Abstract:

In this work we study the scalar power spectrum and the spectral index for the Starobinsky inflationary model using the phase integral method up-to third-order of approximation. We show that the semiclassical methods reproduce the scalar power spectrum for the Starobinsky model with a good accuracy, and the value of the spectral index compares favourably with observations. Also, we compare the results with the uniform approximation method and the second-order slow-roll approximation.

Año de publicación:

2020

Keywords:

• semiclassical methods
• Starobinsky inflationary model
• Cosmological perturbations

Fuente:

scopus