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arXiv · 2104.09504

Constant-roll warm inflation and the $\beta$-function approach

Ui Ri Mun
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Abstract

We propose a new approach to constant-roll warm inflation as a generalization of constant-roll inflation. Based on the $\beta$-function formalism, it is shown that constant-roll warm inflation models with a natural end fall into universality classes defined by three different types of $\beta$-functions, under the assumption that radiation energy density is quasi-stable. Given that warm inflation is completely specified by the $\beta$-function and dissipation coefficient ratio, we investigate whether or not the inflation can physically be realized for enough number of e-foldings at the background level for some combinations of the $\beta$-functions and non-trivial dissipation coefficient ratios.

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Ui Ri Mun. 2021-04-19. Constant-roll warm inflation and the $\beta$-function approach. https://doi.org/10.1103/physrevd.103.083527

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