A two-field quintessence model

被引：64

作者：

Bento, MC

Bertolami, O

Santos, NC

机构：

[1] Univ Tecn Lisboa, Dept Fis, Inst Super Tecn, P-1049001 Lisbon, Portugal

[2] Univ Tecn Lisboa, Ctr Fis Interaccoes Fundamentals, Inst Super Tecn, P-1049001 Lisbon, Portugal

来源：

PHYSICAL REVIEW D | 2002年 / 65卷 / 06期

关键词：

D O I：

10.1103/PhysRevD.65.067301

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the dynamics of a quintessence model based on two interacting scalar fields. The model can account for the (recent) accelerated expansion of the Universe suggested by astronomical observations. Acceleration can be permanent or temporary and, for both scenarios, it is possible to obtain suitable values for the cosmological parameters while satisfying the nucleosynthesis constraint on the quintessence energy density. We argue that the model dynamics can be made consistent with a stable zero-energy relaxing supersymmetric vacuum.

引用

页数：4

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