Towards Universal Axion Inflation and Reheating in String Theory
High Energy Physics - Theory
2015-06-19 v3 Cosmology and Nongalactic Astrophysics
High Energy Physics - Phenomenology
Abstract
The recent BICEP2 measurements of B-modes indicate a large tensor-to-scalar ratio in inflationary cosmology, which points towards trans-Planckian evolution of the inflaton. We propose possible string-theory realizations thereof. Schemes for natural and axion monodromy inflation are presented in the framework of the type IIB large volume scenario. The inflaton in both cases is given by the universal axion and its potential is generated at subleading order by F-terms. Our models are shown to feature a natural mechanism for inflaton decay into predominantly Standard Model particles.
Cite
@article{arxiv.1404.3542,
title = {Towards Universal Axion Inflation and Reheating in String Theory},
author = {Ralph Blumenhagen and Erik Plauschinn},
journal= {arXiv preprint arXiv:1404.3542},
year = {2015}
}
Comments
7 pages; v2: references and one paragraph added; v3: minor changes in section 4