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Statistical anisotropy of the curvature perturbation from vector field perturbations.

Research output: Contribution to journalJournal article

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Statistical anisotropy of the curvature perturbation from vector field perturbations. / Dimopoulos, Konstantinos; Karciauskas, Mindaugas; Lyth, David H.; Rodriguez, Yeinzon.

In: Journal of Cosmology and Astroparticle Physics, Vol. 2009, No. 5, 26.05.2009, p. 013.

Research output: Contribution to journalJournal article

Harvard

Dimopoulos, K, Karciauskas, M, Lyth, DH & Rodriguez, Y 2009, 'Statistical anisotropy of the curvature perturbation from vector field perturbations.', Journal of Cosmology and Astroparticle Physics, vol. 2009, no. 5, pp. 013. https://doi.org/10.1088/1475-7516/2009/05/013

APA

Dimopoulos, K., Karciauskas, M., Lyth, D. H., & Rodriguez, Y. (2009). Statistical anisotropy of the curvature perturbation from vector field perturbations. Journal of Cosmology and Astroparticle Physics, 2009(5), 013. https://doi.org/10.1088/1475-7516/2009/05/013

Vancouver

Dimopoulos K, Karciauskas M, Lyth DH, Rodriguez Y. Statistical anisotropy of the curvature perturbation from vector field perturbations. Journal of Cosmology and Astroparticle Physics. 2009 May 26;2009(5):013. https://doi.org/10.1088/1475-7516/2009/05/013

Author

Dimopoulos, Konstantinos ; Karciauskas, Mindaugas ; Lyth, David H. ; Rodriguez, Yeinzon. / Statistical anisotropy of the curvature perturbation from vector field perturbations. In: Journal of Cosmology and Astroparticle Physics. 2009 ; Vol. 2009, No. 5. pp. 013.

Bibtex

@article{6a8c614c7fe24dea9d06b59786cd397b,
title = "Statistical anisotropy of the curvature perturbation from vector field perturbations.",
abstract = "The δN formula for the primordial curvature perturbation ζ is extended to include vector as well as scalar fields. Formulas for the tree-level contributions to the spectrum and bispectrum of ζ are given, exhibiting statistical anisotropy. The one-loop contribution to the spectrum of ζ is also worked out. We then consider the generation of vector field perturbations from the vacuum, including the longitudinal component that will be present if there is no gauge invariance. Finally, the δN formula is applied to the vector curvaton and vector inflation models with the tensor perturbation also evaluated in the latter case.",
keywords = "cosmological perturbation theory, inflation, physics of the early universe, power spectrum",
author = "Konstantinos Dimopoulos and Mindaugas Karciauskas and Lyth, {David H.} and Yeinzon Rodriguez",
year = "2009",
month = may
day = "26",
doi = "10.1088/1475-7516/2009/05/013",
language = "English",
volume = "2009",
pages = "013",
journal = "Journal of Cosmology and Astroparticle Physics",
issn = "1475-7516",
publisher = "IOP Publishing",
number = "5",

}

RIS

TY - JOUR

T1 - Statistical anisotropy of the curvature perturbation from vector field perturbations.

AU - Dimopoulos, Konstantinos

AU - Karciauskas, Mindaugas

AU - Lyth, David H.

AU - Rodriguez, Yeinzon

PY - 2009/5/26

Y1 - 2009/5/26

N2 - The δN formula for the primordial curvature perturbation ζ is extended to include vector as well as scalar fields. Formulas for the tree-level contributions to the spectrum and bispectrum of ζ are given, exhibiting statistical anisotropy. The one-loop contribution to the spectrum of ζ is also worked out. We then consider the generation of vector field perturbations from the vacuum, including the longitudinal component that will be present if there is no gauge invariance. Finally, the δN formula is applied to the vector curvaton and vector inflation models with the tensor perturbation also evaluated in the latter case.

AB - The δN formula for the primordial curvature perturbation ζ is extended to include vector as well as scalar fields. Formulas for the tree-level contributions to the spectrum and bispectrum of ζ are given, exhibiting statistical anisotropy. The one-loop contribution to the spectrum of ζ is also worked out. We then consider the generation of vector field perturbations from the vacuum, including the longitudinal component that will be present if there is no gauge invariance. Finally, the δN formula is applied to the vector curvaton and vector inflation models with the tensor perturbation also evaluated in the latter case.

KW - cosmological perturbation theory

KW - inflation

KW - physics of the early universe

KW - power spectrum

UR - http://www.scopus.com/inward/record.url?scp=70349579587&partnerID=8YFLogxK

U2 - 10.1088/1475-7516/2009/05/013

DO - 10.1088/1475-7516/2009/05/013

M3 - Journal article

VL - 2009

SP - 013

JO - Journal of Cosmology and Astroparticle Physics

JF - Journal of Cosmology and Astroparticle Physics

SN - 1475-7516

IS - 5

ER -