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

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.

10 pages, 5 figures

References in corpus (3)

• Hidden supersymmetry of domain walls and cosmologies
• Power spectrum for inflation models with quantum and thermal noises
• Universality classes for models of inflation

Cited by in corpus (1)

• Reassessing constant-roll Warm Inflation