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arXiv · 1705.05834

On the Inflationary Perturbations of Massive Higher-Spin Fields

Alex Kehagias·Antonio Riotto
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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.

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Alex Kehagias, Antonio Riotto. 2017-05-16. On the Inflationary Perturbations of Massive Higher-Spin Fields. https://doi.org/10.1088/1475-7516%2F2017%2F07%2F046

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