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Curvaton Potential Terms, Scale-Dependent Perturbation Spectra and Chaotic Initial Conditions

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Curvaton Potential Terms, Scale-Dependent Perturbation Spectra and Chaotic Initial Conditions. / McDonald, John.
In: Journal of Cosmology and Astroparticle Physics, Vol. 2003, No. 12, 005, 12.12.2003.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

McDonald, J 2003, 'Curvaton Potential Terms, Scale-Dependent Perturbation Spectra and Chaotic Initial Conditions', Journal of Cosmology and Astroparticle Physics, vol. 2003, no. 12, 005. https://doi.org/10.1088/1475-7516/2003/12/005

APA

McDonald, J. (2003). Curvaton Potential Terms, Scale-Dependent Perturbation Spectra and Chaotic Initial Conditions. Journal of Cosmology and Astroparticle Physics, 2003(12), Article 005. https://doi.org/10.1088/1475-7516/2003/12/005

Vancouver

McDonald J. Curvaton Potential Terms, Scale-Dependent Perturbation Spectra and Chaotic Initial Conditions. Journal of Cosmology and Astroparticle Physics. 2003 Dec 12;2003(12):005. doi: 10.1088/1475-7516/2003/12/005

Author

McDonald, John. / Curvaton Potential Terms, Scale-Dependent Perturbation Spectra and Chaotic Initial Conditions. In: Journal of Cosmology and Astroparticle Physics. 2003 ; Vol. 2003, No. 12.

Bibtex

@article{67619d0294154082b3b189706df0bd8b,
title = "Curvaton Potential Terms, Scale-Dependent Perturbation Spectra and Chaotic Initial Conditions",
abstract = "The curvaton scenario predicts an almost scale-invariant spectrum of perturbations in most inflation models. We consider the possibility that renormalizable 4 or Planck scale-suppressed non-renormalizable curvaton potential terms may result in an observable deviation from scale-invariance. We show that if the curvaton initially has a large amplitude and if the total number of e-foldings of inflation is less than about 300 then a running blue perturbation spectrum with an observable deviation from scale-invariance is likely. D-term inflation is considered as an example with a potentially low total number of e-foldings of inflation. A secondary role for the curvaton, in which it drives a period of chaotic inflation leading to D-term or other flat potential inflation from an initially chaotic state, is suggested.",
author = "John McDonald",
year = "2003",
month = dec,
day = "12",
doi = "10.1088/1475-7516/2003/12/005",
language = "English",
volume = "2003",
journal = "Journal of Cosmology and Astroparticle Physics",
issn = "1475-7516",
publisher = "IOP Publishing",
number = "12",

}

RIS

TY - JOUR

T1 - Curvaton Potential Terms, Scale-Dependent Perturbation Spectra and Chaotic Initial Conditions

AU - McDonald, John

PY - 2003/12/12

Y1 - 2003/12/12

N2 - The curvaton scenario predicts an almost scale-invariant spectrum of perturbations in most inflation models. We consider the possibility that renormalizable 4 or Planck scale-suppressed non-renormalizable curvaton potential terms may result in an observable deviation from scale-invariance. We show that if the curvaton initially has a large amplitude and if the total number of e-foldings of inflation is less than about 300 then a running blue perturbation spectrum with an observable deviation from scale-invariance is likely. D-term inflation is considered as an example with a potentially low total number of e-foldings of inflation. A secondary role for the curvaton, in which it drives a period of chaotic inflation leading to D-term or other flat potential inflation from an initially chaotic state, is suggested.

AB - The curvaton scenario predicts an almost scale-invariant spectrum of perturbations in most inflation models. We consider the possibility that renormalizable 4 or Planck scale-suppressed non-renormalizable curvaton potential terms may result in an observable deviation from scale-invariance. We show that if the curvaton initially has a large amplitude and if the total number of e-foldings of inflation is less than about 300 then a running blue perturbation spectrum with an observable deviation from scale-invariance is likely. D-term inflation is considered as an example with a potentially low total number of e-foldings of inflation. A secondary role for the curvaton, in which it drives a period of chaotic inflation leading to D-term or other flat potential inflation from an initially chaotic state, is suggested.

U2 - 10.1088/1475-7516/2003/12/005

DO - 10.1088/1475-7516/2003/12/005

M3 - Journal article

VL - 2003

JO - Journal of Cosmology and Astroparticle Physics

JF - Journal of Cosmology and Astroparticle Physics

SN - 1475-7516

IS - 12

M1 - 005

ER -