Transport equations for the inflationary trispectrum

  title={Transport equations for the inflationary trispectrum},
  author={Gemma J. Anderson and David J. Mulryne and D avid Seery},
  journal={Journal of Cosmology and Astroparticle Physics},
We use transport techniques to calculate the trispectrum produced in multiple-field inflationary models with canonical kinetic terms. Our method allows the time evolution of the local trispectrum parameters, tauNL and gNL, to be tracked throughout the inflationary phase. We illustrate our approach using examples. We give a simplified method to calculate the superhorizon part of the relation between field fluctuations on spatially flat hypersurfaces and the curvature perturbation on uniform… Expand

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