On the Inflationary Perturbations of Massive Higher-Spin Fields

Abstract

Cosmological perturbations of massive higher-spin fields are generated during inflation, but they decay on scales larger than the Hubble radius as a consequence of the Higuchi bound. By introducing suitable couplings to the inflaton field, we show that one can obtain statistical correlators of massive higher-spin fields which remain constant or decay very slowly outside the Hubble radius. This opens up the possibility of new observational signatures from inflation.

22 pages

References in corpus (5)

• Generation of Large-Scale Magnetic Fields in Single-Field Inflation
• Magnetic fields from inflation?
• Cosmological Collider Physics
• Non-Gaussianity as a Particle Detector
• Lectures on Higher Spin Holography

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