Imprints of Spinning Particles on Primordial Cosmological Perturbations
High Energy Physics - Theory
2018-02-15 v2 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
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.
Keywords
Cite
@article{arxiv.1712.06626,
title = {Imprints of Spinning Particles on Primordial Cosmological Perturbations},
author = {Gabriele Franciolini and Alex Kehagias and Antonio Riotto},
journal= {arXiv preprint arXiv:1712.06626},
year = {2018}
}
Comments
21 pages, 2 figures, v2: matching published version