arXiv:1712.06626·v2·High Energy Physics — Theory
Imprints of Spinning Particles on Primordial Cosmological Perturbations
Gabriele Franciolini (1)🇨🇭 · Alex Kehagias (2)🇬🇷 · Antonio Riotto (1) ((1) Department of Theoretical Physics and Center for Astroparticle Physics (CAP), Geneva, Switzerland, (2) Physics Division, National Technical University of Athens, Greece)🇨🇭
Abstract
If there exist higher-spin particles during inflation which are light compared to the Hubble rate, they may leave distinct statistical anisotropic imprints on the correlators involving scalar and graviton fluctuations. We characterise such signatures using the dS/CFT correspondence and the operator product expansion techniques. In particular, we obtain generic results for the case of partially massless higher-spin states.
Comments: 21 pages, 2 figures, v2: matching published version