Cosmology from Non-Minimal Geometry-Matter Coupling

被引：18

作者：

Goncalves, B. S. ^{[1
]}

Moraes, P. H. R. S. ^{[2
]}

Mishra, B. ^{[3
]}

机构：

[1] Inst Tecnol Aeronaut, Dept Fis, BR-12228900 Sao Jose Dos Campos, SP, Brazil

[2] Univ Fed ABC UFABC, Ctr Ciencias Nat & Humanas CCNH, Ave Estados 5001, BR-09210580 Santo Andre, SP, Brazil

[3] Birla Inst Technol & Sci Pilani, Dept Math, Hyderabad Campus, Hyderabad 500078, India

来源：

FORTSCHRITTE DER PHYSIK-PROGRESS OF PHYSICS | 2023年 / 71卷 / 8-9期

关键词：

cosmological models; f(R; L-m); gravity; DARK-MATTER; EQUILIBRIUM-CONFIGURATIONS; SPIRAL GALAXIES; F(R) THEORIES; F R; REDSHIFT;

D O I：

10.1002/prop.202200153

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We construct a cosmological model from the inception of the Friedmann-Lemaitre-Robertson-Walker metric into the field equations of the f (R, L-m) gravity theory, with R being the Ricci scalar and L-m being the matter lagrangian density. The formalism is developed for a particular f (R, L-m) function, namely R/16p + (1 + sR)L-m, with s being a constant that carries the geometry-matter coupling. Our solutions are remarkably capable of evading the Big-Bang singularity as well as predict the cosmic acceleration with no need for the cosmological constant, but simply as a consequence of the geometry-matter coupling terms in the Friedmann-like equations.

引用

页数：5

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