Primordial Universe with radiation and Bose-Einstein condensate

被引：4

作者：

Freitas, R. C. ^{[1
]}

Monerat, G. A. ^{[2
]}

Oliveira-Neto, G. ^{[3
]}

Alvarenga, F. G. ^{[4
]}

Goncalves, S. V. B. ^{[4
]}

Fracalossi, R. ^{[4
]}

Correa Silva, E., V ^{[5
]}

Ferreira Filho, L. G. ^{[5
]}

机构：

[1] Fac Tecnol Jundiai Deputado Ary Fossen, Av Uniao Ferroviarios, BR-13201160 Jundiai, SP, Brazil

[2] Univ Estado Rio de Janeiro, Inst Politecn, Dept Modelagem Computac, BR-28625570 Nova Friburgo, RJ, Brazil

[3] Univ Fed Juiz de Fora, Inst Ciencias Exatas, Dept Fis, BR-36036330 Juiz De Fora, MG, Brazil

[4] Univ Fed Espirito Santo, Ctr Ciencias Exatas, Dept Fis, BR-29075910 Vitoria, ES, Brazil

[5] Univ Estado Rio de Janeiro, Fac Tecnol, Dept Matemat & Comp, BR-27523000 Resende, RJ, Brazil

来源：

PHYSICS OF THE DARK UNIVERSE | 2019年 / 25卷

关键词：

Quantum cosmology; Wheeler-DeWitt equation; Bose-Einstein condensate; EQUATION-OF-STATE;

D O I：

10.1016/j.dark.2019.100325

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this work we derive a scenario in which the early universe consists of radiation fluid and Bose-Einstein condensate. The possibility of gravitational self-interaction due to an attractive Bose-Einstein condensate is analyzed. The classical behavior of the scale factor of the universe is determined by a parameter associated with the Bose-Einstein fluid with bouncing or Big Crunch solutions. After we proceed to compute the finite-norm wave packet solutions to the Wheeler-DeWitt equation. The behavior of the scale factor is studied by applying the many-worlds interpretation of quantum mechanics. The quantum cosmological model is free from the singularities. (C) 2019 Published by Elsevier B.V.

引用

页数：9

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