Conformal invariance of curvature perturbation

Jinn Ouk Gong; Jai Chan Hwang; Wan Il Park; Misao Sasaki; Yong Seon Song

doi:10.1088/1475-7516/2011/09/023

Conformal invariance of curvature perturbation

Jinn Ouk Gong, Jai Chan Hwang, Wan Il Park, Misao Sasaki, Yong Seon Song

Department of Science Education

Research output: Contribution to journal › Article › peer-review

60 Scopus citations

Abstract

We show that in the single component situation all perturbation variables in the comoving gauge are conformally invariant to all perturbation orders. Generally we identify a special time slicing, the uniform-conformal transformation slicing, where all perturbations are again conformally invariant to all perturbation orders. We apply this result to the δN formalism, and show its conformal invariance.

Original language	English
Article number	023
Journal	Journal of Cosmology and Astroparticle Physics
Volume	2011
Issue number	9
DOIs	https://doi.org/10.1088/1475-7516/2011/09/023
State	Published - Sep 2011

Keywords

Modified gravity
cosmological perturbation theory
inflation

Access to Document

10.1088/1475-7516/2011/09/023

Cite this

@article{0c530cc8648a4a6989c0d48de81ccf92,

title = "Conformal invariance of curvature perturbation",

abstract = "We show that in the single component situation all perturbation variables in the comoving gauge are conformally invariant to all perturbation orders. Generally we identify a special time slicing, the uniform-conformal transformation slicing, where all perturbations are again conformally invariant to all perturbation orders. We apply this result to the δN formalism, and show its conformal invariance.",

keywords = "Modified gravity, cosmological perturbation theory, inflation",

author = "Gong, {Jinn Ouk} and Hwang, {Jai Chan} and Park, {Wan Il} and Misao Sasaki and Song, {Yong Seon}",

year = "2011",

month = sep,

doi = "10.1088/1475-7516/2011/09/023",

language = "English",

volume = "2011",

journal = "Journal of Cosmology and Astroparticle Physics",

issn = "1475-7516",

publisher = "IOP Publishing Ltd.",

number = "9",

}

TY - JOUR

T1 - Conformal invariance of curvature perturbation

AU - Gong, Jinn Ouk

AU - Hwang, Jai Chan

AU - Park, Wan Il

AU - Sasaki, Misao

AU - Song, Yong Seon

PY - 2011/9

Y1 - 2011/9

N2 - We show that in the single component situation all perturbation variables in the comoving gauge are conformally invariant to all perturbation orders. Generally we identify a special time slicing, the uniform-conformal transformation slicing, where all perturbations are again conformally invariant to all perturbation orders. We apply this result to the δN formalism, and show its conformal invariance.

AB - We show that in the single component situation all perturbation variables in the comoving gauge are conformally invariant to all perturbation orders. Generally we identify a special time slicing, the uniform-conformal transformation slicing, where all perturbations are again conformally invariant to all perturbation orders. We apply this result to the δN formalism, and show its conformal invariance.

KW - Modified gravity

KW - cosmological perturbation theory

KW - inflation

UR - http://www.scopus.com/inward/record.url?scp=80053513634&partnerID=8YFLogxK

U2 - 10.1088/1475-7516/2011/09/023

DO - 10.1088/1475-7516/2011/09/023

M3 - Article

AN - SCOPUS:80053513634

SN - 1475-7516

VL - 2011

JO - Journal of Cosmology and Astroparticle Physics

JF - Journal of Cosmology and Astroparticle Physics

IS - 9

M1 - 023

ER -

Conformal invariance of curvature perturbation

Abstract

Keywords

Access to Document

Fingerprint

Cite this