Chiral Heterotic Strings with Positive Cosmological Constant

Abstract

We present explicit examples of semi-realistic heterotic models with spontaneously broken supersymmetry, which dynamically lead to breaking scales much smaller than $M_{\mathrm{Planck}}$ and exponentially small positive values for the cosmological constant. Contrary to field theoretic intuition, we find that the global structure of the effective potential is significantly affected by contributions of massive and non-level matched string states and we investigate the conditions that dynamically ensure a number of desired properties.

46 pages, refs added

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Cited by in corpus (12)

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• Marginal deformations of heterotic interpolating models and exponential suppression of the cosmological constant
• Highly Excited Strings I: Generating Function
• Geometry of orientifold vacua and supersymmetry breaking
• Type $\bar{0}$ Heterotic String Orbifolds
• Satisfiability Modulo Theories and Chiral Heterotic String Vacua with Positive Cosmological Constant
• A Dynamical Mechanism for Large Volumes with Consistent Couplings
• Gravitational Threshold Corrections in Non-Supersymmetric Heterotic Strings
• Dark Horse, Dark Matter: Revisiting the SO(16)x SO(16)' Nonsupersymmetric Model in the LHC and Dark Energy Era
• Spontaneous dark-matter mass generation along cosmological attractors in string theory
• GUT Scale Unification in Heterotic Strings
• Gauge Symmetry Enhancement by Wilson Lines in Twisted Compactification