Heterotic Warm Inflation
High Energy Physics - Theory
2025-09-19 v1 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
In this paper we propose a two-field model of warm inflation motivated from a heterotic string construction. The model contains an axion and a dilaton-like field. We show that while warm inflation can take place in the axion-field direction, thermal corrections coming from the radiation gauge fields, which couples to both the axion and the dilaton, prevent warm inflation to happen in the dilaton-field direction. We explore the background dynamics for different parameters, and identify a diversity of dynamical behaviors allowed in this model, denoting different regimes of warm inflation.
Keywords
Cite
@article{arxiv.2509.15125,
title = {Heterotic Warm Inflation},
author = {Arjun Berera and Heliudson Bernardo and Suddhasattwa Brahma and Jaime Calderón-Figueroa and Rudnei O. Ramos and Michael W. Toomey},
journal= {arXiv preprint arXiv:2509.15125},
year = {2025}
}
Comments
26 papes, 4 figures