快子暴涨的Hamilton-Jacobi形式及宇宙学扰动  

Hamilton-Jacobi formalism of tachyon inflation and cosmological perturbations

作　　者：刘道军[1] 

机构地区：[1]上海师范大学天体物理中心,上海200234

出　　处：《上海师范大学学报（自然科学版）》2014年第4期349-358,共10页Journal of Shanghai Normal University(Natural Sciences)

基　　金：上海市自然科学基金项目(12ZR142170);上海师范大学创新团队项目(DXL124)

摘　　要：讨论带有Born-Infeld作用量的快子场所驱动的暴涨模型.首先给出了快子暴涨方程的Hamilton-Jacobi形式并且考虑如何去解Hamilton-Jacobi方程;然后讨论快子场的宇宙学扰动给出扰动场的模方程;最后,讨论了一个真实的由弦理论得来的滚动快子模型.We study the cosmological inflation models driven by the rolling tachyon field which has a Born-Infeld-type action. We drive the Hamilton-Jaeobi equation for the cosmological dynamics of tachyon inflation and the mode equations for the scalar and tensor perturbations of tachyon field and spacetime, then a solution under the slow-roll condition is given. In the end, a realistic model from string theory is discussed.

关 键 词：快子暴涨 HAMILTON-JACOBI方程 宇宙学扰动 

分 类 号：O412.3[理学—理论物理]