Université de GenèveDépartement de Physique ThéoriqueCAP Genève

Detecting higher-spin fields through statistical anisotropy in the CMB bispectrum

Topics: 
Date: 
12. March 2018
Cite as: 
G. Franciolini, A. Kehagias, A. Riotto, M. Shiraishi, [arXiv:1803.03814].
Summary: 

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.

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