Multi-pole dark energy

作     者：Chao-Jun Feng Xiang-Hua Zhai Xin-Zhou Li 冯朝君;翟向华;李新洲

作者机构：Division of Mathematical and Theoretical PhysicsShanghai Normal UniversityShanghai 200234China Center for AstrophysicsShanghai Normal UniversityShanghai 200234China 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2020年第44卷第10期

页      面：169-177页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：Supported by National Science Foundation of China(11105091,11047138) "Chen Guang"project supported by Shanghai Municipal Education Commission and Shanghai Education Development Foundation(12CG51) Shanghai Natural Science Foundation,China(10ZR1422000) 

主　　题：dark energy scalar field cosmology 

摘      要：A scalar field with a pole in its kinetic term is often used to study cosmological inflation;it can also play the role of dark energy,which is called the pole dark energy *** propose a generalized model where the scalar field may have two or even multiple poles in the kinetic term,and we call it the multi-pole dark *** find that the poles can place some restrictions on the values of the original scalar field with a non-canonical kinetic *** the transformation to the canonical form,we get a flat potential for the transformed scalar field even if the original field has a steep *** late-time evolution of the universe is obtained explicitly for the two pole model,while dynamical analysis is performed for the multiple pole *** find that it does have a stable attractor solution,which corresponds to the universe dominated by the potential of the scalar field.