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

[21] Perturbations of cosmological and black hole solutions in massive gravity and bi-gravity
Kobayashi, Tsutomu
Siino, Masaru
Yamaguchi, Masahide
Yoshida, Daisuke
[J]. PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS, 2016, 2016 (10):
[22] Exact Solutions for Bianchi Type-I Cosmological Models in f(R) Theory of Gravity
Hasmani, A. H.
Al-Haysah, Ahmed M.
[J]. APPLICATIONS AND APPLIED MATHEMATICS-AN INTERNATIONAL JOURNAL, 2019, 14 (01): : 334 - 348
[23] Adiabaticity and gravity theory independent conservation laws for cosmological perturbations
Enea Romano, Antonio
Mooij, Sander
Sasaki, Misao
[J]. PHYSICS LETTERS B, 2016, 755 : 464 - 468
[24] COSMOLOGICAL SOLUTIONS OF A QUADRATIC THEORY OF GRAVITY WITH TORSION
CANALE, A
DERITIS, R
TARANTINO, C
[J]. PHYSICS LETTERS A, 1984, 100 (04) : 178 - 181
[25] Stable cosmological solutions in degenerate theory of gravity
Kase, Ryotaro
Kimura, Rampei
Naruko, Atsushi
Yoshida, Daisuke
[J]. PHYSICS LETTERS B, 2018, 783 : 320 - 325
[26] NEW COSMOLOGICAL SOLUTIONS IN MASSIVE GRAVITY THEORY
Pinho, A. S. S.
Pereira, S. H.
Mendonca, E. L.
[J]. REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA, 2017, 53 (01) : 17 - 28
[27] Nonlocal de Sitter gravity and its exact cosmological solutions
Dimitrijevic, Ivan
Dragovich, Branko
Rakic, Zoran
Stankovic, Jelena
[J]. JOURNAL OF HIGH ENERGY PHYSICS, 2022, 2022 (12)
[28] EXACT-SOLUTIONS OF TOPOLOGICALLY MASSIVE GRAVITY WITH A COSMOLOGICAL CONSTANT
NUTKU, Y
[J]. CLASSICAL AND QUANTUM GRAVITY, 1993, 10 (12) : 2657 - 2661
[29] Nonlocal de Sitter gravity and its exact cosmological solutions
Ivan Dimitrijevic
Branko Dragovich
Zoran Rakic
Jelena Stankovic
[J]. Journal of High Energy Physics, 2022
[30] Exact cosmological solutions of scale-invariant gravity theories
Barrow, JD
Clifton, T
[J]. CLASSICAL AND QUANTUM GRAVITY, 2006, 23 (01) : L1 - L6

← 1 2 3 4 5 →