Dynamics of quintessential inflation  

作　　者：翟向华 赵一斌 

机构地区：[1]Shanghai United Center for Astrophysics, Shanghai Normal University, Shanghai 200234, China

出　　处：《Chinese Physics B》2006年第10期2465-2469,共5页中国物理B（英文版）

基　　金：Project supported by the National Nature Science Foundation of China （Grant No 10473007） and the Shanghai Rising-Star Program （Grant No 02QA14033）.

摘　　要：In this paper, we study a realistic model of quintessential inflation with radiation and matter. By the analysis of the dynamical system and numerical work about the evolution of the equation of state and cosmic density parameter, we show that this model is a good match for the current astronomical observation. The conclusion we obtain is in favour of the model where the modular part of the complex field plays the role of the infiaton whereas the argument part is the quintessence field. Numerical calculation shows that a heteroclinic orbit （solution of the dynamical system） is interpolated between early-time de Sitter phase （an unstable critical point） and a late-time de Sitter attractor.In this paper, we study a realistic model of quintessential inflation with radiation and matter. By the analysis of the dynamical system and numerical work about the evolution of the equation of state and cosmic density parameter, we show that this model is a good match for the current astronomical observation. The conclusion we obtain is in favour of the model where the modular part of the complex field plays the role of the infiaton whereas the argument part is the quintessence field. Numerical calculation shows that a heteroclinic orbit （solution of the dynamical system） is interpolated between early-time de Sitter phase （an unstable critical point） and a late-time de Sitter attractor.

关 键 词：dark energy INFLATION ATTRACTOR 

分 类 号：P14[天文地球—天体物理]