On the linear stability of a scalar-field with exponential potential in a flat Robertson-Walker background

被引：1

作者：

Alho, Artur ^{[1
]}

机构：

[1] Univ Minho, Ctr Matemat, P-4710057 Braga, Portugal

来源：

SPANISH RELATIVITY MEETING (ERE 2009) | 2010年 / 229卷

关键词：

PERTURBATIONS;

D O I：

10.1088/1742-6596/229/1/012015

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study covariant and gauge-invariant linear scalar perturbations of a scalar-field with positive exponential potential in a flat Robertson-Walker background. By applying a dynamical systems approach we investigate how the phase of the perturbations evolves, finding bounds on the wave-number in terms of the slope parameter, for which the perturbations decays when approaching the inflationary solution.

引用

页数：4

共 9 条

[1]

ALHO A, LINEAR STABILI UNPUB

[2] STABILITY OF OPEN UNIVERSES [J].

BRUNI, M .

PHYSICAL REVIEW D, 1993, 47 (02) :738-742

[3] GAUGE-INVARIANT PERTURBATIONS IN A SCALAR FIELD DOMINATED UNIVERSE [J].

BRUNI, M ;

ELLIS, GFR ;

DUNSBY, PKS .

CLASSICAL AND QUANTUM GRAVITY, 1992, 9 (04) :921-945

[4]

COLEY AA, 2003, ASSL, V291

[5]

Ellis G.F.R., 1999, Proceedings of the NATO Advanced Study Institute on Theoretical and Observational Cosmology, Cargese, France, August 17-29, 1998, V541, P1

[6] COVARIANT AND GAUGE-INVARIANT APPROACH TO COSMOLOGICAL DENSITY-FLUCTUATIONS [J].

ELLIS, GFR ;

BRUNI, M .

PHYSICAL REVIEW D, 1989, 40 (06) :1804-1818

[7] SCALAR FIELDS IN COSMOLOGY WITH AN EXPONENTIAL POTENTIAL [J].

HALLIWELL, JJ .

PHYSICS LETTERS B, 1987, 185 (3-4) :341-344

[8] PERTURBATIONS OF FRIEDMANN-ROBERTSON-WALKER COSMOLOGICAL MODELS [J].

STEWART, JM .

CLASSICAL AND QUANTUM GRAVITY, 1990, 7 (07) :1169-1180

[9] GAUGE-INVARIANT COSMIC STRUCTURES - A DYNAMIC-SYSTEMS APPROACH [J].

WOSZCZYNA, A .

PHYSICAL REVIEW D, 1992, 45 (06) :1982-1988

← 1 →