General solutions to N-field cosmology with exponential potentials

被引：0

作者：

Christodoulidis, Perseas ^{[1
]}

机构：

[1] Univ Groningen, Swinderen Inst Particle Phys & Grav, Nijenborgh 4, NL-9747 AG Groningen, Netherlands

来源：

EUROPEAN PHYSICAL JOURNAL C | 2021年 / 81卷 / 05期

关键词：

SCALAR FIELDS; MODELS;

D O I：

10.1140/epjc/s10052-021-09268-5

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We construct the general analytical solution for the N-field product-exponential potential in an expanding FLRW background. We demonstrate the relevance of this analytical solution in more general contexts for the derivation of estimates for the transitional time between an arbitrary initial state and the slow-roll solutions. In certain cases, these estimates can also be used to demonstrate the non-linear convergence towards the slow-roll solutions. In addition, we extend the solution to include stiff matter as well.

引用

页数：10

共 61 条

[21] Late-time cosmology in a (phantom) scalar-tensor theory: Dark energy and the cosmic speed-up [J].