# Warm (Pseudo)Scalar Inflation

**Authors:** Vahid. Kamali

arXiv: 1901.01897 · 2019-08-21

## TL;DR

This paper proposes a warm inflation model with a pseudoscalar field coupled to gauge fields, maintaining a stable potential and aligning with observations even with strong interactions.

## Contribution

It introduces a new warm inflation framework with direct pseudoscalar-gauge coupling that preserves the potential against thermal corrections and fits observational data.

## Key findings

- Model's dissipation parameter remains approximately constant in high-dissipative regime
- Compatible with observational data and non-Gaussianity constraints
- Potential remains protected against thermal corrections despite strong coupling

## Abstract

In this note, we will introduce an action for warm inflation model with direct coupling between the pseudoscalar field and mass-less $SU(2)$ gauge fields. The potential of inflaton is protected against the thermal corrections in a thermal bath of gauge fields even with strong direct interaction between inflaton and light fields. The dissipation parameter of this model is approximately constant in the high-dissipative regime. In this regime, the model is compatible with observational data and non-Gaussianity is in order of Hubble slow-roll parameter $\frac{\epsilon_{\phi}}{1+Q}$ even in $f<M_p$ limit.

## Full text

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## Figures

5 figures with captions in the complete paper: https://tomesphere.com/paper/1901.01897/full.md

## References

24 references — full list in the complete paper: https://tomesphere.com/paper/1901.01897/full.md

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Source: https://tomesphere.com/paper/1901.01897