Probing higher-spin fields from inflation with higher-order statistics of the CMB

Abstract

We investigate the degree to which the Cosmic Microwave Background (CMB) can be used to constrain primordial non-Gaussianity coming from the presence of spinning particles coupled to the inflaton. We compute the $⟨TTT⟩$ and $⟨TTTT⟩$ correlation functions arising from the exchange of a particle with spin $s$ and generic mass, and the corresponding signal-to-noise ratios for a cosmic-variance-limited CMB experiment. We show that already with \emph{Planck} data one could improve the theoretical bounds on the amplitude of these primordial templates by an order of magnitude. We particularly emphasize the fact that the trispectrum could be sizable even if the bispectrum is not, making it a prime observable to explore the particle content during inflation.

arXiv commentv4: 26 pages, 6 figures. Fixed minor typo in Higuchi bound, Eq. (1)

References in corpus (29)

• Planck 2015 results. XIII. Cosmological parameters
• Efficient Computation of CMB anisotropies in closed FRW models
• The Effective Field Theory of Inflation
• Acoustic Signatures in the Primary Microwave Background Bispectrum
• Planck 2015 results. XVII. Constraints on primordial non-Gaussianity
• The shape of non-Gaussianities
• The Angular Trispectrum of the CMB
• On the consistency relation of the 3-point function in single field inflation
• The anisotropic power spectrum and bispectrum in the f(phi) F^2 mechanism
• Angular Trispectrum of CMB Temperature Anisotropy from Primordial Non-Gaussianity with the Full Radiation Transfer Function
• Primordial Bispectrum Information from CMB Polarization
• Imprint of inflation on galaxy shape correlations
• Signatures of anisotropic sources in the squeezed-limit bispectrum of the cosmic microwave background
• Galaxy Bias and Primordial Non-Gaussianity
• Partially Massless Fields During Inflation
• On the Inflationary Perturbations of Massive Higher-Spin Fields
• Effective Theory of Large-Scale Structure with Primordial Non-Gaussianity
• Testing Primordial Non-Gaussianity in CMB Anisotropies
• Fast and accurate evaluation of Wigner 3j, 6j, and 9j symbols using prime factorisation and multi-word integer arithmetic
• Light Particles with Spin in Inflation
• Galaxy Bispectrum from Massive Spinning Particles
• Multitracing Anisotropic Non-Gaussianity with Galaxy Shapes
• Tensor Squeezed Limits and the Higuchi Bound
• Imprints of Spinning Particles on Primordial Cosmological Perturbations
• Detecting higher spin fields through statistical anisotropy in the CMB and galaxy power spectra
• Signatures of anisotropic sources in the trispectrum of the cosmic microwave background
• Intrinsic galaxy alignment from angular dependent primordial non-Gaussianity
• Detecting higher spin fields through statistical anisotropy in the CMB bispectrum
• Constraints on long-lived, higher-spin particles from galaxy bispectrum

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• Dynamical analysis of cosmological models with non-Abelian gauge vector fields
• Fundamental limits on constraining primordial non-Gaussianity
• Super-CMB fluctuations and the Hubble tension
• Cosmological Angular Trispectra and Non-Gaussian Covariance
• Anisotropic separate universe and Weinberg's adiabatic mode
• Primordial Tensor Non-Gaussianity from Massive Gravity
• The primordial information content of Rayleigh Anisotropies