Detecting higher spin fields through statistical anisotropy in the CMB bispectrum

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.

11 pages, 5 figures

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Cited by in corpus (27)

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• Arbitrarily coupled $p-$forms in cosmological backgrounds
• Closed Strings and Weak Gravity from Higher-Spin Causality
• Probing higher-spin fields from inflation with higher-order statistics of the CMB
• Anisotropic separate universe and Weinberg's adiabatic mode
• Primordial Tensor Non-Gaussianity from Massive Gravity
• Correlation functions of sourced gravitational waves in inflationary scalar vector models. A symmetry based approach
• Cosmic No-hair Conjecture and Inflation with an SU(3) Gauge Field
• Hunting for Statistical Anisotropy in Tensor Modes with B-mode Observations
• Constraining graviton non-Gaussianity through the CMB bispectra
• Statistically-Anisotropic Tensor Bispectrum from Inflation