Possible signatures of the inflationary particle content spin-2 fields
| Authors |
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| Publication date | 10-2017 |
| Journal | Journal of Cosmology and Astroparticle Physics |
| Article number | 038 |
| Volume | Issue number | 2017 | 10 |
| Number of pages | 27 |
| Organisations |
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| Abstract | We study the imprints of a massive spin-2 field on inflationary observables, and in particular on the breaking of consistency relations. In this setup, the minimal inflationary field content interacts with the massive spin-2 field through dRGT interactions, thus guaranteeing the absence of Boulware-Deser ghostly degrees of freedom. The unitarity requirement on spinning particles, known as Higuchi bound, plays a crucial role for the size of the observable signal. |
| Document type | Article |
| Language | English |
| Published at | https://doi.org/10.1088/1475-7516/2017/10/038 |
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