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

被引：3

作者：

Antonio Belinchon, Jose ^{[1
]}

Gonzalez, Carlos ^{[2
]}

Herrera, Ramon ^{[3
]}

机构：

[1] Univ Atacama, Fac Ingn, Dept Matemat, Ave Copayapu 485, Copiapo, Chile

[2] Univ Atacama, Dept Fis, Ave Copayapu 485, Copiapo, Chile

[3] Pontificia Univ Catolica Valparaiso, Inst Fis, Ave Brasil 2950,Casilla 4059, Valparaiso, Chile

来源：

GENERAL RELATIVITY AND GRAVITATION | 2020年 / 52卷 / 04期

关键词：

General relativity; Cosmology; Cosmolgy perturbations theory; INFLATIONARY UNIVERSE SCENARIO; BROKEN-SYMMETRIC THEORY; SCALAR-TENSOR THEORY; DENSITY PERTURBATIONS; SPECTRUM; FIELD; CONSTRAINTS; GENERATION; RELATIVITY; ATTRACTOR;

D O I：

10.1007/s10714-020-02685-z

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页数：22

共 50 条

[1] Reconstruction and exact solutions for cosmological perturbations from a generalized gravity theory
José Antonio Belinchón
Carlos González
Ramón Herrera
[J]. General Relativity and Gravitation, 2020, 52
[2] COSMOLOGICAL PERTURBATIONS IN GENERALIZED GRAVITY THEORIES - SOLUTIONS
HWANG, JC
[J]. PHYSICAL REVIEW D, 1990, 42 (08): : 2601 - 2606
[3] Cosmological Perturbations in the Generalized Theories of Gravity
Popa, L. A.
[J]. EXOTIC NUCLEI AND NUCLEAR - PARTICLE ASTROPHYSICS III: FROM NUCLEI TO STARS, 2010, 1304 : 161 - 169
[4] Cosmological perturbations in generalized gravity theories
Noh, H
[J]. MODERN PHYSICS LETTERS A, 2004, 19 (13-16) : 1203 - 1206
[5] Cosmological perturbations in generalized gravity theories
Hwang, JC
Noh, H
[J]. PHYSICAL REVIEW D, 1996, 54 (02) : 1460 - 1473
[6] COSMOLOGICAL PERTURBATIONS IN GENERALIZED GRAVITY THEORIES - FORMULATION
HWANG, JC
[J]. CLASSICAL AND QUANTUM GRAVITY, 1990, 7 (09) : 1613 - 1631
[7] Unified analysis of cosmological perturbations in generalized gravity
Hwang, JC
[J]. PHYSICAL REVIEW D, 1996, 53 (02) : 762 - 765
[8] Quantum generations of cosmological perturbations in generalized gravity
Hwang, J
[J]. CLASSICAL AND QUANTUM GRAVITY, 1997, 14 (12) : 3327 - 3336
[9] Reconstruction of cosmological matter perturbations in modified gravity
Gonzalez, J. E.
[J]. PHYSICAL REVIEW D, 2017, 96 (12)
[10] Cosmological evolution and exact solutions in a fourth-order theory of gravity
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[J]. PHYSICAL REVIEW D, 2017, 95 (06)

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