Université de GenèveDépartement de Physique ThéoriqueCAP Genève

On the Inflationary Perturbations of Massive Higher-Spin Fields

18. May 2017
Cite as: 
A. Kehagias and A. Riotto [arXiv:1705.05834].
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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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