Dissipative generalized Chaplygin gas as phantom dark energy

被引：48

作者：

Cruz, Norman ^{[1
]}

Lepe, Samuel

Pena, Francisco

机构：

[1] Univ Santiago, Fac Ciencia, Dept Fis, Casilla 307, Santiago, Chile

[2] Pontificia Univ Catolica Valparaiso, Inst Fis, Fac Ciencias Basicas & Matemat, Valparaiso, Chile

[3] Univ La Frontera, Fac Ingn Ciencias & Adm, Dept Ciencias Fis, Temuco, Chile

来源：

PHYSICS LETTERS B | 2007年 / 646卷 / 04期

关键词：

D O I：

10.1016/j.physletb.2006.12.070

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The generalized Chaplygin gas, characterized by the equation of state p = -A/p(alpha), has been considered as a model for dark energy due to its dark-energy-like evolution at late times. When dissipative processes are taken into account, within the framework of the standard Eckart theory of relativistic irreversible thermodynamics, cosmological analytical solutions are found. Using the truncated causal version of the Israel-Stewart formalism. a suitable model was constructed which crosses the w = -1 barrier. The future-singularities encountered in both approaches are of a new type, and not included in the classification presented by Nojiri and Odintsov [S. Nojiri, S.D. Odintsov, Phys. Rev. D 72 (2005) 023003]. (c) 2007 Published by Elsevier B.V.

引用

页码：177 / 182

页数：6

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