Tachyon warm-intermediate inflation in the light of Planck data

TL;DR

This paper analyzes a warm inflation model based on Barrow's solution, demonstrating its compatibility with Planck 2015 data through analytical calculations of slow roll parameters and spectral predictions.

Contribution

It provides an analytical study of warm inflation with Barrow's solution and tests its observational viability against recent Planck data.

Findings

Spectral index and tensor-to-scalar ratio match Planck 2015 results

Model predictions are consistent with viable inflationary scenarios

Analytical expressions for slow roll parameters are derived

Abstract

We study the main properties of the warm inflationary model based on Barrow's solution for the scale factor of the universe. Within this framework we calculate analytically the basic slow roll parameters for different versions of warm inflation. We test the performance of this inflationary scenario against the latest observational data and we verify that the predicted spectral index and the tensor-to-scalar fluctuation ratio are in excellent agreement with those of {\it Planck 2015}. Finally, we find that the current predictions are consistent with those of viable inflationary models.