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Chinese Physics, 2004, Vol. 13(5): 583-588    DOI: 10.1088/1009-1963/13/5/004
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Chaotic evolution of the coupled scalar fields system during inflation

Chen Ju-Hua (陈菊华), Wang Yong-Jiu (王永久)
College of Physics and Information Science, Institute of Physics, Hunan Normal University, Changsha 410081, China
Abstract  In this paper we consider two coupled scalar fields during the inflation as a dynamical system. With the Poincaré 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.
Keywords:  chaotic evolution      coupled scalar fields system  
Received:  04 September 2003      Revised:  06 November 2003      Accepted manuscript online: 
PACS:  05.45.Jn (High-dimensional chaos)  
  98.80.Jk (Mathematical and relativistic aspects of cosmology)  
Fund: Project supported by the National Basic Research Program of China (Grant No 2003CB716300).

Cite this article: 

Chen Ju-Hua (陈菊华), Wang Yong-Jiu (王永久) Chaotic evolution of the coupled scalar fields system during inflation 2004 Chinese Physics 13 583

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