Natural Inflation and Universal Hypermultiplet
Abstract
A novel framework is proposed for embedding the natural inflation into the type IIA superstrings compactified on a Calabi-Yau (CY) three-fold. Inflaton is identified with axion of the Universal Hypermultiplet (UH). The other UH scalars (including dilaton) are stabilized by the CY fluxes whose impact can be described by gauging of the abelian isometry associated with the axion, when the NS5-brane instanton contributions are suppressed. Then the stabilizing scalar potential is controlled by the integrable three-dimensional Toda equation, and leads to spontaneous N=2 SUSY breaking. The inflationary scalar potential of the UH axion is dynamically generated at a lower scale in the natural inflation via the non-perturbative quantum field effects such as gaugino condensation. The natural inflation has two scales that allow any values of the CMB observables .
Cite
@article{arxiv.1402.0627,
title = {Natural Inflation and Universal Hypermultiplet},
author = {Sergei V. Ketov},
journal= {arXiv preprint arXiv:1402.0627},
year = {2014}
}
Comments
12 pages, no figures, LaTeX; major revision of the whole paper: in the Proceedings of the QFTG International Conference, 29 July - 3 August 2014, Tomsk, Russia, the special issue of the Tomsk State Pedagogical University Bulletin, and in the electronic Proceedings of the DESY Theory Workshop Particle Cosmology after Planck, 23-26 September 2014, Hamburg, Germany