R Symmetries in the Landscape

Abstract

In the landscape, states with $R$ symmetries at the classical level form a distinct branch, with a potentially interesting phenomenology. Some preliminary analyses suggested that the population of these states would be significantly suppressed. We survey orientifolds of IIB theories compactified on Calabi-Yau spaces based on vanishing polynomials in weighted projective spaces, and find that the suppression is quite substantial. On the other hand, we find that a $Z_2$ R-parity is a common feature in the landscape. We discuss whether the cosmological constant and proton decay or cosmology might select the low energy branch. We include also some remarks on split supersymmetry.

13 pages

References in corpus (3)

• Distributions of nonsupersymmetric flux vacua
• Enumerating Flux Vacua with Enhanced Symmetries
• Branches of the Landscape

Cited by in corpus (34)

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• Dynamics of the Peccei Quinn Scale
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• Supersymmetry versus Gauge Symmetry on the Heterotic Landscape
• Supersymmetric Protection and the Swampland
• Low Energy Supersymmetry from Non-Geometry
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• Supersymmetry Breaking and the Cosmological Constant
• Continuous degeneracy of non-supersymmetric vacua
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• Novel counterexample to the Nelson-Seiberg theorem
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• Symmetric Points in the Landscape as Cosmological Attractors