Minimal supergravity inflation without slow gravitino

2021/04/30 by Takahiro Terada
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #Gravitation #Gravitino #Graviton #Inflation (cosmology) #Inflaton #Particle physics #Physics #Quantum mechanics #Supergravity #Supersymmetry #Supersymmetry breaking #Theoretical physics #astro-ph.CO #gr-qc #hep-ph #hep-th

paper · pdf · doi:10.1103/physrevd.103.125022

published as Phys. Rev. D 103, 125022 (2021) · 30 pages; published version (very minor revision; references added)

arxiv created 2021/06/07 · openalex publication_date 2021/06/22 · arxiv updated 2021/06/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We utilize a recently proposed cubic nilpotent superfield to realize inflation in supergravity with the minimal degrees of freedom: the inflaton, graviton, and massive gravitino. As an advantage, the resultant model is free from the catastrophic production of gravitinos due to its vanishing propagation speed. However, the model suffers from the standard gravitino problem, and its viability depends on the mass spectrum and the thermal history of the Universe.

Citations

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• Inflaton decay in supergravity
• Is the neutrino a goldstone particle?
• Supersymmetry and Supergravity
• The Standard Model Higgs boson as the inflaton
• Thermal gravitino production and collider tests of leptogenesis
• Cosmological Collider Physics
• Big-bang nucleosynthesis and gravitinos
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• Planck 2015 results
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• Planck2018 results
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