Low-scale Supersymmetry from Inflation

Abstract

We investigate an inflation model with the inflaton being identified with a Higgs boson responsible for the breaking of U(1)B-L symmetry. We show that supersymmetry must remain a good symmetry at scales one order of magnitude below the inflation scale, in order for the inflation model to solve the horizon and flatness problems, as well as to account for the observed density perturbation. The upper bound on the soft supersymmetry breaking mass lies between 1TeV and 10^3TeV. Interestingly, our finding opens up a possibility that universes with the low-scale supersymmetry are realized by the inflationary selection. Our inflation model has rich implications; non-thermal leptogenesis naturally works, and the gravitino and moduli problems as well as the moduli destabilization problem can be solved or ameliorated; the standard-model higgs boson receives a sizable radiative correction if the supersymmertry breaking takes a value on the high side ~10^3TeV.

23pages, 3 figures. v2: references added

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• Eluding the Gravitino Overproduction in Inflaton Decay
• GUT Scalar Potentials for Higgs Inflation
• The 3.5 keV X-ray line signal from decaying moduli with low cutoff scale
• Starobinsky-Like Inflation and Neutrino Masses in a No-Scale SO(10) Model
• Topological Higgs inflation: The origin of the Standard Model criticality
• Inflation and Leptogenesis in High-Scale Supersymmetry
• From $R^2$ Gravity to No-Scale Supergravity
• QCD Axion Window and False Vacuum Higgs Inflation
• A Gravitino-rich Universe
• The Spectrum of Dark Radiation as a Probe of Reheating
• Longevity Problem of Sterile Neutrino Dark Matter
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• Alchemical Inflation: inflaton turns into Higgs
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• Anarchy and Leptogenesis
• Higgs mass and inflation
• Gravitational Waves from Metastable Cosmic Strings in Supersymmetric New Inflation Model
• Hybrid inflation in high-scale supersymmetry
• Hidden Photon and Axion Dark Matter from Symmetry Breaking
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