Standard

Distortion of the standard cosmology in R+R2 theory. / Arbuzova, E. V.; Dolgov, A. D.; Singh, R. S.

In: Journal of Cosmology and Astroparticle Physics, Vol. 2018, No. 7, 019, 10.07.2018.

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

Harvard

Arbuzova, EV, Dolgov, AD & Singh, RS 2018, 'Distortion of the standard cosmology in R+R2 theory', Journal of Cosmology and Astroparticle Physics, vol. 2018, no. 7, 019. https://doi.org/10.1088/1475-7516/2018/07/019

APA

Arbuzova, E. V., Dolgov, A. D., & Singh, R. S. (2018). Distortion of the standard cosmology in R+R2 theory. Journal of Cosmology and Astroparticle Physics, 2018(7), [019]. https://doi.org/10.1088/1475-7516/2018/07/019

Vancouver

Arbuzova EV, Dolgov AD, Singh RS. Distortion of the standard cosmology in R+R2 theory. Journal of Cosmology and Astroparticle Physics. 2018 Jul 10;2018(7):019. doi: 10.1088/1475-7516/2018/07/019

Author

Arbuzova, E. V. ; Dolgov, A. D. ; Singh, R. S. / Distortion of the standard cosmology in R+R2 theory. In: Journal of Cosmology and Astroparticle Physics. 2018 ; Vol. 2018, No. 7.

BibTeX

@article{41de4f8d4ae84404b73a81f0ca4795ce,
title = "Distortion of the standard cosmology in R+R2 theory",
abstract = "Universe history in R2-gravity is studied from {"}beginning{"} up to the present epoch. It is assumed that initially the curvature scalar R was sufficiently large to induce the proper duration of inflation. Gravitational particle production by the oscillating R(t) led to a graceful exit from inflation, but the cosmological evolution in the early universe was drastically different from the standard one till the universe age reached the value of the order of the inverse decay rate of the oscillating curvature R(t). This deviation from the standard cosmology might have a noticeable impact on the formation of primordial black holes and baryogenesis. At later time, after exponential decay of the curvature oscillations, cosmology may return to normality.",
keywords = "Inflation, modified gravity, physics of the early universe, MODELS, DARK-MATTER, inflation",
author = "Arbuzova, {E. V.} and Dolgov, {A. D.} and Singh, {R. S.}",
note = "Publisher Copyright: {\textcopyright} 2018 IOP Publishing Ltd and Sissa Medialab.",
year = "2018",
month = jul,
day = "10",
doi = "10.1088/1475-7516/2018/07/019",
language = "English",
volume = "2018",
journal = "Journal of Cosmology and Astroparticle Physics",
issn = "1475-7516",
publisher = "IOP Publishing Ltd.",
number = "7",

}

RIS

TY - JOUR

T1 - Distortion of the standard cosmology in R+R2 theory

AU - Arbuzova, E. V.

AU - Dolgov, A. D.

AU - Singh, R. S.

N1 - Publisher Copyright: © 2018 IOP Publishing Ltd and Sissa Medialab.

PY - 2018/7/10

Y1 - 2018/7/10

N2 - Universe history in R2-gravity is studied from "beginning" up to the present epoch. It is assumed that initially the curvature scalar R was sufficiently large to induce the proper duration of inflation. Gravitational particle production by the oscillating R(t) led to a graceful exit from inflation, but the cosmological evolution in the early universe was drastically different from the standard one till the universe age reached the value of the order of the inverse decay rate of the oscillating curvature R(t). This deviation from the standard cosmology might have a noticeable impact on the formation of primordial black holes and baryogenesis. At later time, after exponential decay of the curvature oscillations, cosmology may return to normality.

AB - Universe history in R2-gravity is studied from "beginning" up to the present epoch. It is assumed that initially the curvature scalar R was sufficiently large to induce the proper duration of inflation. Gravitational particle production by the oscillating R(t) led to a graceful exit from inflation, but the cosmological evolution in the early universe was drastically different from the standard one till the universe age reached the value of the order of the inverse decay rate of the oscillating curvature R(t). This deviation from the standard cosmology might have a noticeable impact on the formation of primordial black holes and baryogenesis. At later time, after exponential decay of the curvature oscillations, cosmology may return to normality.

KW - Inflation

KW - modified gravity

KW - physics of the early universe

KW - MODELS

KW - DARK-MATTER

KW - inflation

UR - http://www.scopus.com/inward/record.url?scp=85051718355&partnerID=8YFLogxK

U2 - 10.1088/1475-7516/2018/07/019

DO - 10.1088/1475-7516/2018/07/019

M3 - Article

AN - SCOPUS:85051718355

VL - 2018

JO - Journal of Cosmology and Astroparticle Physics

JF - Journal of Cosmology and Astroparticle Physics

SN - 1475-7516

IS - 7

M1 - 019

ER -

ID: 16082830