Inflation by non-minimal coupling

Seong Chan Park, Satoshi Yamaguchi

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

Inflationary scenarios based on simple non-minimal coupling a2R and its generalizations are studied. Generalizing the form of non-minimal coupling to K()R with an arbitrary function K(), we show that the flat potential is still obtainable when V ()/K2() is asymptotically constant. Very interestingly, if the ratio of the dimensionless self-coupling constant (λ) of the inflaton field and the non-minimal coupling constant (a) is small, , the cosmological observables for general monomial cases (K∼a m, V∼λ2m) are in good agreement with recent observational data.

Original languageEnglish
Article number009
JournalJournal of Cosmology and Astroparticle Physics
Volume2008
Issue number8
DOIs
Publication statusPublished - 2008 Aug 1

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics

Cite this

@article{1477213d03c84ae991be878bbef0ce73,
title = "Inflation by non-minimal coupling",
abstract = "Inflationary scenarios based on simple non-minimal coupling a2R and its generalizations are studied. Generalizing the form of non-minimal coupling to K()R with an arbitrary function K(), we show that the flat potential is still obtainable when V ()/K2() is asymptotically constant. Very interestingly, if the ratio of the dimensionless self-coupling constant (λ) of the inflaton field and the non-minimal coupling constant (a) is small, , the cosmological observables for general monomial cases (K∼a m, V∼λ2m) are in good agreement with recent observational data.",
author = "Park, {Seong Chan} and Satoshi Yamaguchi",
year = "2008",
month = "8",
day = "1",
doi = "10.1088/1475-7516/2008/08/009",
language = "English",
volume = "2008",
journal = "Journal of Cosmology and Astroparticle Physics",
issn = "1475-7516",
publisher = "IOP Publishing Ltd.",
number = "8",

}

Inflation by non-minimal coupling. / Park, Seong Chan; Yamaguchi, Satoshi.

In: Journal of Cosmology and Astroparticle Physics, Vol. 2008, No. 8, 009, 01.08.2008.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Inflation by non-minimal coupling

AU - Park, Seong Chan

AU - Yamaguchi, Satoshi

PY - 2008/8/1

Y1 - 2008/8/1

N2 - Inflationary scenarios based on simple non-minimal coupling a2R and its generalizations are studied. Generalizing the form of non-minimal coupling to K()R with an arbitrary function K(), we show that the flat potential is still obtainable when V ()/K2() is asymptotically constant. Very interestingly, if the ratio of the dimensionless self-coupling constant (λ) of the inflaton field and the non-minimal coupling constant (a) is small, , the cosmological observables for general monomial cases (K∼a m, V∼λ2m) are in good agreement with recent observational data.

AB - Inflationary scenarios based on simple non-minimal coupling a2R and its generalizations are studied. Generalizing the form of non-minimal coupling to K()R with an arbitrary function K(), we show that the flat potential is still obtainable when V ()/K2() is asymptotically constant. Very interestingly, if the ratio of the dimensionless self-coupling constant (λ) of the inflaton field and the non-minimal coupling constant (a) is small, , the cosmological observables for general monomial cases (K∼a m, V∼λ2m) are in good agreement with recent observational data.

UR - http://www.scopus.com/inward/record.url?scp=56349096406&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=56349096406&partnerID=8YFLogxK

U2 - 10.1088/1475-7516/2008/08/009

DO - 10.1088/1475-7516/2008/08/009

M3 - Article

VL - 2008

JO - Journal of Cosmology and Astroparticle Physics

JF - Journal of Cosmology and Astroparticle Physics

SN - 1475-7516

IS - 8

M1 - 009

ER -