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Exponentially suppressed cosmological constant with enhanced gauge symmetry in heterotic interpolating models

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arxiv 1905.10745 v4 pith:NY7FLXW6 submitted 2019-05-26 hep-th hep-ph

H. Itoyama , Sota Nakajima This is my paper · ORCID
classification hep-thhep-ph
keywords gaugesymmetryenhancedconstantcosmologicalexponentiallyheteroticinterpolating
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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.

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  1. More on 8d non-supersymmetric branes and heterotic strings

    hep-th 2025-05 conditional novelty 6.0 of 10

    The E8 non-supersymmetric heterotic string on T^2 has exactly 22 maximal gauge enhancements, found by two independent methods, with massless spectra listed for each.

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