Primordial trispectrum and orthogonal non-Gaussianities

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Motivations / message• Data analysis of the trispectrum has received much lessattention than the bispectrum: only• Until recently, no counterpart to orthogonal bispectrum• Generation of ‘orthogonal-type’ trispectra in asignificant fraction of parameter space in the simplesttheoretical context• Use as a diagnostic for the appearance of a largeorthogonal bispectrum (pre-Planck)Renaux-Petel,1302.6978and1303.2618
EFT of single-clock inflation• Unitary gauge action:Cheungetal,0709.0293• Lowest order in derivatives, up to 4th order in fluctuations:• Stückelberg time diffeomorphism in thedecoupling regime (neglect the mixing with gravity)with approximate shift-symmetry: constant
Page 1: Primordial trispectrum andorthogona
Page 7 and 8: TrispectrumSet-up computationaly eq
Page 9 and 10: A diagnostic of a large orthogonalb
Page 11 and 12: Orthogonal trispectrumIn 1302.6978,
Page 13 and 14: Family of orthogonal trispectraMore

Primordial trispectrum and orthogonal non-Gaussianities

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