Detecting higher spin fields through statistical anisotropy in the CMB bispectrum
Cosmology and Nongalactic Astrophysics
2018-08-30 v1 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
Inflation may provide a suitable collider to probe physics at very high energies. In this paper we investigate the impact on the CMB bispectrum of higher spin fields which are long-lived on super-Hubble scales, e.g. partially massless higher spin fields. We show that distinctive statistical anisotropic signals on the CMB three-point correlator are induced and we investigate their detectability.
Cite
@article{arxiv.1803.03814,
title = {Detecting higher spin fields through statistical anisotropy in the CMB bispectrum},
author = {Gabriele Franciolini and Alex Kehagias and Antonio Riotto and Maresuke Shiraishi},
journal= {arXiv preprint arXiv:1803.03814},
year = {2018}
}
Comments
11 pages, 5 figures