Quantum cosmological models in the Einstein-aether theory with radiation fluid

被引：0

作者：

Monerat, G. A. ^{[1
]}

Alvarenga, F. G. ^{[2
]}

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

Silva, E. V. Correa ^{[4
]}

Tedesco, J. C. G. ^{[5
]}

Manhaes, F. R. ^{[1
]}

机构：

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

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

[3] Univ Fed Juiz De Fora, Dept Fis, Inst Ciencias Exatas, BR-33036900 Juiz De Fora, MG, Brazil

[4] Univ Estado Rio De Janeiro, Fac Tecnol, Dept Matemat Fis & Computacao, BR-27537000 Resende, RJ, Brazil

[5] Univ Estado Rio De Janeiro, Inst Politecn, Dept Engn Mecan & Energia, BR-28625570 Nova Friburgo, RJ, Brazil

来源：

EUROPEAN PHYSICAL JOURNAL PLUS | 2024年 / 139卷 / 09期

关键词：

SUGGESTED INTERPRETATION; WAVE-FUNCTION; TERMS;

D O I：

10.1140/epjp/s13360-024-05600-6

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Friedmann-Lema & icirc;tre-Robertson-Walker (FLRW) quantum cosmological models are built within the framework of the Einstein-aether theory to describe a universe filled with radiation fluid using Schutz variational formalism. Propagators are employed to determine the wave function of the universe that satisfies the Wheeler-DeWitt equation, adhering to boundary conditions ensuring the self-adjoint nature of the Hamiltonian operator. The behavior of the scale factor is then analyzed using the quantum-mechanical interpretation schemes of many-worlds and de Broglie-Bohm, revealing the absence of big bang-type singularities in the studied cases. Finally, observational parameters of the Einstein-aether theory are used in the analyses of the cosmological solutions thus obtained.

引用

页数：11

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