Warm-tachyon Gauss-Bonnet inflation in the light of Planck 2015 data

Understand

We study a warm-tachyon inflationary model non-minimally coupled to a Gauss-Bonnet term.

• The general conditions required for reliability of the model are obtained by considerations of a combined hierarchy of Hubble and Gauss-Bonnet flow functions.
• The perturbed equations are comprehensively derived in the longitudinal gauge in the presence of slow-roll and quasi-stable conditions.
• General expressions for observable quantities of interest such as the tensor-to-scalar ratio, scalar spectral index and its running are found in the high dissipation regime.