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The inflationary trispectrum

journal contribution
posted on 2023-06-07, 22:37 authored by David SeeryDavid Seery, James E Lidsey, Martin S Sloth
We calculate the trispectrum of the primordial curvature perturbation generated by an epoch of slow-roll in. ation in the early universe, and demonstrate that the non-Gaussian signature imprinted at horizon crossing is unobservably small, of order lambda NL less than or similar to r/50, where r < 1 is the tensor-to-scalar ratio. Therefore any primordial non-Gaussianity observed in future microwave background experiments is likely to have been synthesized by gravitational effects on superhorizon scales. We discuss the application of Maldacena's consistency condition to the trispectrum.

History

Publication status

  • Published

Journal

Journal of Cosmology and Astroparticle Physics

ISSN

1475-7516

Issue

1

Volume

2007

Department affiliated with

  • Physics and Astronomy Publications

Notes

Article Number: 027

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

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