Exponentially suppressed cosmological constant with enhanced gauge symmetry in heterotic interpolating models
High Energy Physics - Theory
2019-12-11 v4 High Energy Physics - Phenomenology
Abstract
A few nine-dimensional interpolating models with two parameters are constructed and the massless spectra are studied by considering compactification of heterotic strings on a twisted circle with Wilson line. It is found that there are some conditions between radius R and Wilson line A under which the gauge symmetry is enhanced. In particular, when the gauge symmetry is enhanced to SO(18) \times SO(14), the cosmological constant is exponentially suppressed. We also construct a non-supersymmetric string model which is tachyon-free in all regions of moduli space and whose gauge symmetry involves E_8.
Keywords
Cite
@article{arxiv.1905.10745,
title = {Exponentially suppressed cosmological constant with enhanced gauge symmetry in heterotic interpolating models},
author = {H. Itoyama and Sota Nakajima},
journal= {arXiv preprint arXiv:1905.10745},
year = {2019}
}
Comments
Final version to appear in PTEP