Implications of Planck results for models with local type non-Gaussianity

Abstract

We discuss implications of Planck results for models with local type non-Gaussianity. In light of the recent results of the Planck satellite, we constrain model parameters of several representative models and give the prediction of trispectrum, in particular, gNL. We also consider interesting possibilities that trispectrum appears as the first signature of the non-Gaussianities of the curvature perturbations, that is, fNL is small while gNL can be significantly large.

19 pages, matches published version in JCAP

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Cited by in corpus (12)

• Planck constraints on single-field inflation
• Strong Planck constraints on braneworld and non-commutative inflation
• The next non-Gaussianity frontier: what can a measurement with $\sigma (f_{\mathrm{NL}})\lesssim 1$ tell us about multifield inflation?
• Non-linear curvature perturbation in multi-field inflation models with non-minimal coupling
• Soft limits in holographic cosmology
• Primordial non-Gaussianity in the bispectra of large-scale structure
• Planck Trispectrum Constraints on Primordial Non-Gaussianity at Cubic Order
• Probing primordial non-Gaussianity with 21 cm fluctuations from minihalos
• Spectator field models in light of spectral index after Planck
• What Planck does not tell us about inflation
• Constraints on variations in inflaton decay rate from modulated preheating
• Higher order non-linear parameters with PLANCK