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Galileon inflation

journal contribution
posted on 2023-06-07, 23:28 authored by Clare Burrage, Claudia de Rahm, David SeeryDavid Seery, Andrew J Tolley
Galileon inflation is a radiatively stable higher derivative model of inflation. The model is determined by a finite number of relevant operators which are protected by a covariant generalization of the Galileon shift symmetry.We show that the nongaussianity of the primordial density perturbation generated during an epoch of Galileon inflation is a particularly powerful observational probe of these models and that, when the speed of sound is small, fNL can be larger than the usual result fNLproptocs-2.

History

Publication status

  • Published

Journal

Journal of Cosmology and Astroparticle Physics

ISSN

1475-7516

Issue

01

Volume

2011

Page range

014

Pages

13.0

Department affiliated with

  • Physics and Astronomy Publications

Notes

Author list in alphabetical order

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

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