Reconstruction and exact solutions for cosmological perturbations from a generalized gravity theory

José Antonio Belinchón; Carlos González; RAMON ALEJANDRO HERRERA APABLAZA

doi:10.1007/s10714-020-02685-z

Reconstruction and exact solutions for cosmological perturbations from a generalized gravity theory

José Antonio Belinchón, Carlos González, RAMON ALEJANDRO HERRERA APABLAZA

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

2 Scopus citations

Abstract

Scalar and tensor cosmological perturbations during an inflationary universe scenario in the context of the a generalized gravity theory are studied. This analyze is carried out considering an ansatz on the variables associated to scalar and tensor perturbation (z_s and z_t) in the Jordan frame. In this context, we analyze two different Ansatze for the ratio z_s/ z_t, and we study in great detail the analytical and exact solutions for the cosmological perturbations together with the corresponding reconstruction of the background variables. Recent observational data from the Planck 2018 results are employed to constrain the parameters of each of the models.

Original language	English
Article number	35
Journal	General Relativity and Gravitation
Volume	52
Issue number	4
DOIs	https://doi.org/10.1007/s10714-020-02685-z
State	Published - 1 Apr 2020
Externally published	Yes

Keywords

Cosmolgy perturbations theory
Cosmology
General relativity

Access to Document

10.1007/s10714-020-02685-z

Cite this

@article{bff6078792fd43be995c4c844bc2202b,

title = "Reconstruction and exact solutions for cosmological perturbations from a generalized gravity theory",

abstract = "Scalar and tensor cosmological perturbations during an inflationary universe scenario in the context of the a generalized gravity theory are studied. This analyze is carried out considering an ansatz on the variables associated to scalar and tensor perturbation (zs and zt) in the Jordan frame. In this context, we analyze two different Ansatze for the ratio zs/ zt, and we study in great detail the analytical and exact solutions for the cosmological perturbations together with the corresponding reconstruction of the background variables. Recent observational data from the Planck 2018 results are employed to constrain the parameters of each of the models.",

keywords = "Cosmolgy perturbations theory, Cosmology, General relativity",

author = "Belinch{\'o}n, {Jos{\'e} Antonio} and Carlos Gonz{\'a}lez and {HERRERA APABLAZA}, {RAMON ALEJANDRO}",

year = "2020",

month = apr,

day = "1",

doi = "10.1007/s10714-020-02685-z",

language = "English",

volume = "52",

journal = "General Relativity and Gravitation",

issn = "0001-7701",

number = "4",

}

TY - JOUR

T1 - Reconstruction and exact solutions for cosmological perturbations from a generalized gravity theory

AU - Belinchón, José Antonio

AU - González, Carlos

AU - HERRERA APABLAZA, RAMON ALEJANDRO

PY - 2020/4/1

Y1 - 2020/4/1

N2 - Scalar and tensor cosmological perturbations during an inflationary universe scenario in the context of the a generalized gravity theory are studied. This analyze is carried out considering an ansatz on the variables associated to scalar and tensor perturbation (zs and zt) in the Jordan frame. In this context, we analyze two different Ansatze for the ratio zs/ zt, and we study in great detail the analytical and exact solutions for the cosmological perturbations together with the corresponding reconstruction of the background variables. Recent observational data from the Planck 2018 results are employed to constrain the parameters of each of the models.

AB - Scalar and tensor cosmological perturbations during an inflationary universe scenario in the context of the a generalized gravity theory are studied. This analyze is carried out considering an ansatz on the variables associated to scalar and tensor perturbation (zs and zt) in the Jordan frame. In this context, we analyze two different Ansatze for the ratio zs/ zt, and we study in great detail the analytical and exact solutions for the cosmological perturbations together with the corresponding reconstruction of the background variables. Recent observational data from the Planck 2018 results are employed to constrain the parameters of each of the models.

KW - Cosmolgy perturbations theory

KW - Cosmology

KW - General relativity

UR - http://www.scopus.com/inward/record.url?scp=85083379655&partnerID=8YFLogxK

U2 - 10.1007/s10714-020-02685-z

DO - 10.1007/s10714-020-02685-z

M3 - Article

AN - SCOPUS:85083379655

VL - 52

JO - General Relativity and Gravitation

JF - General Relativity and Gravitation

SN - 0001-7701

IS - 4

M1 - 35

ER -

Reconstruction and exact solutions for cosmological perturbations from a generalized gravity theory

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this