Composite Inflation and further refining dS swampland conjecture

TL;DR

This paper investigates whether various composite inflation models comply with a recently proposed refined de Sitter swampland conjecture, finding some models are in tension while others satisfy the conjecture, suggesting they may all reside in the landscape.

Contribution

The study applies a new refined de Sitter swampland conjecture to composite inflation models, analyzing their compatibility and implications for the landscape versus swampland.

Findings

Some inflation models are in strong tension with the refined conjecture.

All models satisfy the alternative refined de Sitter conjecture.

Results suggest all models may be in the landscape.

Abstract

A natural combination of the first and second derivatives of the scalar potential was achieved in a framework of an alternative refined de Sitter conjecture recently proposed in the literature. In this work, we study various inflation models in which the inflaton is a composite field emerging from various strongly interacting field theories. We then examine if these three models of inflation can satisfy this further refining de Sitter swampland conjecture or not. Regarding our analysis with proper choices of parameters $a,\,b=1- a$ and $q$, we find that some inflationary models are in strong tension with the refined Swampland conjecture. However, all of them can always satisfy the alternative refined de Sitter conjecture. Therefore, one may expect that all inflationary models might all be in landscape since the further refining de Sitter swampland conjecture is satisfied.