Exponentially suppressed cosmological constant with enhanced gauge symmetry in heterotic interpolating models. (3rd December 2019)

• Record Type: Journal Article
• Authors: Itoyama, H; Nakajima, Sota
• Is Part Of: Progress of theoretical and experimental physics. Volume 2019:Number 12(2019)
• Publication Date: 2019-12-03
• Subjects: B41; Physics -- Periodicals; Mathematical physics -- Periodicals; 530.05
• DOI: 10.1093/ptep/ptz123
• Languages: English
• ISSNs: 2050-3911

Abstract

Abstract: A few 9D interpolating models with two parameters are constructed and the massless spectra are studied by considering compactification of heterotic strings on a twisted circle with a 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 that is tachyon-free in all regions of moduli space and whose gauge symmetry involves $E_8$ .