Natural quintessence?

被引：78

作者：

Hebecker, A ^{[1
]}

Wetterich, C ^{[1
]}

机构：

[1] Heidelberg Univ, Inst Theoret Phys, D-69120 Heidelberg, Germany

来源：

PHYSICS LETTERS B | 2001年 / 497卷 / 3-4期

关键词：

D O I：

10.1016/S0370-2693(00)01339-3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We formulate conditions for the naturalness of cosmological quintessence scenarios. The quintessence Langrangian is taken to be the sum of a simple exponential potential and a non-canonical kinetic term. This parameterization covers most variants of quintessence and makes the naturalness conditions particularly transparent. Several "natural" scalar models lead, for the present cosmological era, to a large fraction of homogeneous dark energy density and an acceleration of the scale factor as suggested by observation. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：281 / 288

页数：8

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