Solving Cosmological Problems of Supersymmetric Axion Models in an Inflationary Universe

Abstract

We revisit inflationary cosmology of axion models in the light of recent developments on the inflaton decay in supergravity. We find that all the cosmological difficulties, including gravitino, axino overproduction and axionic isocurvature fluctuation, can be avoided if the saxion field has large initial amplitude during inflation and decays before big-bang nucleosynthesis.

19 pages, 4 figures

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Cited by in corpus (23)

• Axions : Theory and Cosmological Role
• Probing reheating temperature of the universe with gravitational wave background
• Axinos as Dark Matter Particles
• Imprint of a scalar era on the primordial spectrum of gravitational waves
• Cosmological aspects of inflation in a supersymmetric axion model
• Gravitino or Axino Dark Matter with Reheat Temperature as high as $10^{16}$ GeV
• Constraints on scalar and tensor perturbations in phenomenological and two-field inflation models: Bayesian evidences for primordial isocurvature and tensor modes
• Supersymmetric Flaxion
• Isocurvature perturbations in extra radiation
• Direct/indirect detection signatures of nonthermally produced dark matter
• Inflation from a Supersymmetric Axion Model
• Saxion Cosmology for Thermalized Gravitino Dark Matter
• Explosive Axion Production from Saxion
• Axion Dark Radiation: Hubble Tension and Hyper-kamiokande Neutrino Experiment
• Revisiting Isocurvature Bounds on the Minimal QCD Axion
• Probing the BSM physics with CMB precision cosmology: an application to supersymmetry
• Unified Models of the QCD Axion and Supersymmetry Breaking
• Cosmological Moduli Problem from Thermal Effects
• F-Term Hybrid Inflation Followed by a Peccei-Quinn Phase Transition
• Affleck-Dine baryogenesis in the SUSY Dine-Fischler-Srednicki-Zhitnitsky axion model without R-parity
• Common Origin of Warm Dark Matter and Dark Radiation
• Revisiting the cosmological coherent oscillation
• Early universe dynamics of PQ field with very small self-coupling and its implications for axion dark matter