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Exponentially suppressed cosmological constant with enhanced gauge symmetry in heterotic interpolating models
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Exponentially suppressed cosmological constant with enhanced gauge symmetry in heterotic interpolating models
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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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Cited by 1 Pith paper
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