Potential reconstruction from general power spectrum in single-field inflation

Ki Young Choi; Jinn Ouk Gong; Su Beom Kang; Rathul Nath Raveendran

doi:10.1088/1475-7516/2022/01/012

Potential reconstruction from general power spectrum in single-field inflation

Ki Young Choi, Jinn Ouk Gong, Su Beom Kang, Rathul Nath Raveendran

Department of Science Education

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

2 Scopus citations

Abstract

We suggest a new method to reconstruct, within canonical single-field inflation, the inflaton potential directly from the primordial power spectrum which may deviate significantly from near scale-invariance. Our approach relies on a more generalized slow-roll approximation than the standard one, and can probe the properties of the inflaton potential reliably. We give a few examples for reconstructing potential and discuss the validity of our method.

Original language	English
Article number	012
Journal	Journal of Cosmology and Astroparticle Physics
Volume	2022
Issue number	1
DOIs	https://doi.org/10.1088/1475-7516/2022/01/012
State	Published - Jan 2022

Bibliographical note

Publisher Copyright:
© 2022 IOP Publishing Ltd and Sissa Medialab.

Keywords

cosmological perturbation theory
inflation
physics of the early universe

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10.1088/1475-7516/2022/01/012

Cite this

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title = "Potential reconstruction from general power spectrum in single-field inflation",

abstract = "We suggest a new method to reconstruct, within canonical single-field inflation, the inflaton potential directly from the primordial power spectrum which may deviate significantly from near scale-invariance. Our approach relies on a more generalized slow-roll approximation than the standard one, and can probe the properties of the inflaton potential reliably. We give a few examples for reconstructing potential and discuss the validity of our method.",

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AU - Kang, Su Beom

AU - Nath Raveendran, Rathul

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Y1 - 2022/1

N2 - We suggest a new method to reconstruct, within canonical single-field inflation, the inflaton potential directly from the primordial power spectrum which may deviate significantly from near scale-invariance. Our approach relies on a more generalized slow-roll approximation than the standard one, and can probe the properties of the inflaton potential reliably. We give a few examples for reconstructing potential and discuss the validity of our method.

AB - We suggest a new method to reconstruct, within canonical single-field inflation, the inflaton potential directly from the primordial power spectrum which may deviate significantly from near scale-invariance. Our approach relies on a more generalized slow-roll approximation than the standard one, and can probe the properties of the inflaton potential reliably. We give a few examples for reconstructing potential and discuss the validity of our method.

KW - cosmological perturbation theory

KW - inflation

KW - physics of the early universe

UR - https://www.scopus.com/pages/publications/85123682520

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DO - 10.1088/1475-7516/2022/01/012

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Potential reconstruction from general power spectrum in single-field inflation

Abstract

Bibliographical note

Keywords

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Cite this