Stable emergent Universe - a creation without Big-Bang

被引：7

作者：

Guendelman, E. ^{[1
]}

Herrera, R. ^{[2
]}

Labrana, P. ^{[3
]}

Nissimov, E. ^{[4
]}

Pacheva, S. ^{[4
]}

机构：

[1] Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel

[2] Pontificia Univ Catolica Valparaiso, Inst Fis, Valparaiso, Chile

[3] Univ Bio Bio, Dept Fis, Fac Ciencias, Concepcion, Chile

[4] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Sofia, Bulgaria

来源：

ASTRONOMISCHE NACHRICHTEN | 2015年 / 336卷 / 8-9期

关键词：

cosmology: theory; early universe; inflation;

D O I：

10.1002/asna.201512221

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Based on an earlier introduced new class of generalized gravity-matter models defined in terms of two independent nonRiemannian volume forms (alternative generally covariant integration measure densities) on the space-time manifold, we derive an effective Einstein-frame theory featuring the following remarkable properties: (i) We obtain effective potential for the cosmological scalar field possessing two infinitely large flat regions which allows for a unified description of both early Universe inflation as well as of present dark energy epoch; (ii) for a specific parameter range the model possesses a non-singular stable emergent Universe solution which describes an initial phase of evolution that precedes the inflationary phase. ((c) 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

引用

页码：810 / 814

页数：5

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