Cosmology from a running vacuum model driven by a scalar field

被引：3

作者：

Santos, J. R. L. ^{[1
]}

Moraes, P. H. R. S. ^{[2
,3
]}

机构：

[1] Univ Fed Campina Grande, Unidade Acad Fis, BR-58429900 Campina Grande, PB, Brazil

[2] ITA, Dept Fis, BR-2228900 Sao Jose Dos Campos, SP, Brazil

[3] Univ Napoli Federico II UNINA, Dept Phys, I-80126 Naples, Italy

来源：

INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS | 2020年 / 17卷 / 01期

基金：

巴西圣保罗研究基金会;

关键词：

Vacuum; cosmological constant; cosmological parameters; DECAYING VACUUM; CONSTANT; UNIVERSE; ENERGY;

D O I：

10.1142/S0219887820500164

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The possibility that the vacuum energy density rho(Lambda) is, indeed, varying in time, has been investigated lately from the running vacuum models perspective. Motivated by such models, in this work, we relate the decaying vacuum energy rho(Lambda) (t) with a scalar field (phi). We derive the equations of motion from such a premise and implement the first-order formalism in order to obtain analytical solutions to the cosmological parameters. We show that these are in agreement with recent Planck observational data. We discuss the physical consequences of having rho(Lambda) (t) related to phi.

引用

页数：17

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