Chaotic evolution of the coupled scalar fields system during inflation

• 来源期刊: 中国物理(英文版)
• 关键词: chaotic evolution coupled scalar fields system
• 年，卷（期）: 2004,（5）
• 页码范围: 583-588
• 页数: 6页
• 语种: 英文

摘要

In this paper we consider two coupled scalar fields during the inflation as a dynamical system. With the Poincare section method, we investigate the evolution of the coupled scalar fields system. We find that the evolution of the system changes from a regular motion into a chaotic motion when the energy density and the coupling constant of the system increase.