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arXiv · 2008.04750

Semiclassical analysis of the tensor power spectrum in the Starobinsky inflationary model

Truman Tapia·Clara Rojas
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Abstract

In this work we calculate the tensor power spectrum and the tensor-to-scalar ratio r 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 second order. We have obtained consistent values of r using the different approximations, and r is inside the interval reported by observations.

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Truman Tapia, Clara Rojas. 2020-08-08. Semiclassical analysis of the tensor power spectrum in the Starobinsky inflationary model. https://doi.org/10.1142/s0218271821500401

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