Effective equation of state and energy conditions in phantom/tachyon inflationary cosmology perturbed by quantum effects

被引：204

作者：

Nojiri, S ^{[1
]}

Odintsov, SD

机构：

[1] Natl Def Acad, Dept Appl Phys, Yokosuka, Kanagawa 2398686, Japan

[2] CSIC, IEEC, Barcelona 08034, Spain

[3] ICREA, Barcelona 08034, Spain

[4] Tomsk State Pedag Univ, Tomsk, Russia

来源：

PHYSICS LETTERS B | 2003年 / 571卷 / 1-2期

关键词：

D O I：

10.1016/j.physletb.2003.08.013

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss the model consisting of tachyon which may have the negative kinetic energy plus scalar phantom and plus conformal quantum matter. It is demonstrated that such a model naturally admits two de Sitter phases where the early universe inflation is produced by quantum effects and the late time accelerating universe is caused by phantom/tachyon. The energy conditions bounds for such cosmology are derived. It is interesting that effective equation of state may change its sign what depends from the proper choice of the combination of phantom/tachyon and quantum effects. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：1 / 10

页数：10

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