Exact solution in a string cosmological model

被引：131

作者：

Aref'eva, I. Ya. ^{[1
]}

Vernov, S. Yu.

Koshelev, A. S.

机构：

[1] RAS, Steklov Math Inst, Moscow 117901, Russia

[2] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow, Russia

来源：

THEORETICAL AND MATHEMATICAL PHYSICS | 2006年 / 148卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

strings; string field theory; cosmology; branes; tachyon; phantom; dark energy; big rip;

D O I：

10.1007/s11232-006-0086-5

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We construct an exact solution of the Friedmann equations with a phantom scalar matter field originating in string field theory and show the absence of the big-rip singularity. The notable features of the model are a ghost sign of the kinetic term and a special polynomial form of the effective tachyon potential. The constructed solution is stable under small fluctuations of the initial conditions and special variations of the form of the potential.

引用

页码：895 / 909

页数：15