 |
 |
 |
|
|
|
| HAL: hal-00716523, version 1 |
| arXiv: 1107.2642 |
| ADS Bibliographic id: 2011JCAP...12..019G |
| DOI: 10.1088/1475-7516/2011/12/019 |
| Detailed view |  Export this paper |
 |
| Journal of Cosmology and Astroparticle Physics 12 (2011) 019 |
|
|
|
|
| Inflation and primordial non-Gaussianities of "generalized Galileons" |
|
|
| X. Gao1D.A. Steer1 |
|
|
| (2011-12) |
|
|
|
| We set up cosmological perturbation theory and study the cosmological implications of the so-called "generalized Galileon" developed in [6, 7]. This is the most general scalar field theory whose Lagrangian contains derivatives up to second order while keeping second order equations of motion, and contains as sub-cases k-inflation, G-inflation and many other models. We calculate the power spectrum of the primordial curvature perturbation, finding a modification of the usual consistency relation of the tensor-to-scalar ratio in k-inflation or perfect fluid models. Finally we also calculate the bispectrum, which contains no new shapes beyond those of k-inflation. |
|
|
|
|
|
|
|
|
|
|
|
| 1: | APC - AstroParticule et Cosmologie |
|
|
|
|
|
|
|
|
|
| APC - THEORIE |
|
|
|
|
| Subject | : | Physics/High Energy Physics - Theory |
|
|
| Fulltext link: |
|
| http://fr.arXiv.org/abs/1107.2642 |
| hal-00716523, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00716523 | |
| oai:hal.archives-ouvertes.fr:hal-00716523 | |
| From: Danièle Steer | |
| Submitted on: Tuesday, 10 July 2012 16:50:48 | |
| Updated on: Wednesday, 1 August 2012 16:24:45 | |
