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Stable bounce and inflation in non-local higher derivative cosmology

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Published

Standard

Stable bounce and inflation in non-local higher derivative cosmology. / Biswas, Tirthabir; S. Koshelev, Alexey; Mazumdar, Anupam et al.
In: Journal of Cosmology and Astroparticle Physics, Vol. 2012, No. 8, 024, 22.08.2012.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Biswas, T, S. Koshelev, A, Mazumdar, A & Yu. Vernov, S 2012, 'Stable bounce and inflation in non-local higher derivative cosmology', Journal of Cosmology and Astroparticle Physics, vol. 2012, no. 8, 024. https://doi.org/10.1088/1475-7516/2012/08/024

APA

Biswas, T., S. Koshelev, A., Mazumdar, A., & Yu. Vernov, S. (2012). Stable bounce and inflation in non-local higher derivative cosmology. Journal of Cosmology and Astroparticle Physics, 2012(8), Article 024. https://doi.org/10.1088/1475-7516/2012/08/024

Vancouver

Biswas T, S. Koshelev A, Mazumdar A, Yu. Vernov S. Stable bounce and inflation in non-local higher derivative cosmology. Journal of Cosmology and Astroparticle Physics. 2012 Aug 22;2012(8):024. doi: 10.1088/1475-7516/2012/08/024

Author

Biswas, Tirthabir ; S. Koshelev, Alexey ; Mazumdar, Anupam et al. / Stable bounce and inflation in non-local higher derivative cosmology. In: Journal of Cosmology and Astroparticle Physics. 2012 ; Vol. 2012, No. 8.

Bibtex

@article{9b65903183ff43f981f6ecae45a18c0d,
title = "Stable bounce and inflation in non-local higher derivative cosmology",
abstract = "One of the greatest problems of primordial inflation is that the inflationary space-time is past-incomplete. This is mainly because Einstein's GR suffers from a space-like Big Bang singularity. It has recently been shown that ghost-free, non-local higher-derivative ultra-violet modifications of Einstein's gravity may be able to resolve the cosmological Big Bang singularity via a non-singular bounce. Within the framework of such non-local cosmological models, we are going to study both sub- and super-Hubble perturbations around an inflationary trajectory which is preceded by the Big Bounce in the past, and demonstrate that the inflationary trajectory has an ultra-violet completion and that perturbations do not suffer from any pathologies.",
keywords = "cosmic singularity, modified gravity, cosmological perturbation theory, inflation",
author = "Tirthabir Biswas and {S. Koshelev}, Alexey and Anupam Mazumdar and {Yu. Vernov}, Sergey",
note = "24 pages, uses jcappub.sty; v2: version matching the one published in JCAP, some clarifications added",
year = "2012",
month = aug,
day = "22",
doi = "10.1088/1475-7516/2012/08/024",
language = "English",
volume = "2012",
journal = "Journal of Cosmology and Astroparticle Physics",
issn = "1475-7516",
publisher = "IOP Publishing",
number = "8",

}

RIS

TY - JOUR

T1 - Stable bounce and inflation in non-local higher derivative cosmology

AU - Biswas, Tirthabir

AU - S. Koshelev, Alexey

AU - Mazumdar, Anupam

AU - Yu. Vernov, Sergey

N1 - 24 pages, uses jcappub.sty; v2: version matching the one published in JCAP, some clarifications added

PY - 2012/8/22

Y1 - 2012/8/22

N2 - One of the greatest problems of primordial inflation is that the inflationary space-time is past-incomplete. This is mainly because Einstein's GR suffers from a space-like Big Bang singularity. It has recently been shown that ghost-free, non-local higher-derivative ultra-violet modifications of Einstein's gravity may be able to resolve the cosmological Big Bang singularity via a non-singular bounce. Within the framework of such non-local cosmological models, we are going to study both sub- and super-Hubble perturbations around an inflationary trajectory which is preceded by the Big Bounce in the past, and demonstrate that the inflationary trajectory has an ultra-violet completion and that perturbations do not suffer from any pathologies.

AB - One of the greatest problems of primordial inflation is that the inflationary space-time is past-incomplete. This is mainly because Einstein's GR suffers from a space-like Big Bang singularity. It has recently been shown that ghost-free, non-local higher-derivative ultra-violet modifications of Einstein's gravity may be able to resolve the cosmological Big Bang singularity via a non-singular bounce. Within the framework of such non-local cosmological models, we are going to study both sub- and super-Hubble perturbations around an inflationary trajectory which is preceded by the Big Bounce in the past, and demonstrate that the inflationary trajectory has an ultra-violet completion and that perturbations do not suffer from any pathologies.

KW - cosmic singularity

KW - modified gravity

KW - cosmological perturbation theory

KW - inflation

U2 - 10.1088/1475-7516/2012/08/024

DO - 10.1088/1475-7516/2012/08/024

M3 - Journal article

VL - 2012

JO - Journal of Cosmology and Astroparticle Physics

JF - Journal of Cosmology and Astroparticle Physics

SN - 1475-7516

IS - 8

M1 - 024

ER -