The Ubiquitous Inflaton in String-Inspired Models

TL;DR

This paper introduces a string theory inspired inflation model where the inflaton interacts with massive string states, leading to a warm universe without reheating, offering a novel approach to cosmological inflation.

Contribution

It presents a new inflationary model based on string theory that naturally ends in a warm universe through inflaton interactions with string states.

Findings

Inflation ends without reheating due to inflaton-string interactions.

The model predicts a warm universe scenario.

Dissipation of vacuum energy is achieved via string interactions.

Abstract

A string theory based inflationary model is developed where the inflaton interacts with a multitude of massive string level states causing dissipation of vacuum energy. Inflation terminates in a warm Universe without the need for reheating.