Cosmological evolution of quintessence with a sign-changing interaction in dark sector

作     者：ZHANG Ming SUN ChengYi YANG ZhanYing YUE RuiHong 

作者机构：Department of Physics Northwest University Institute of Modern Physics Northwest University Faculty of Science Ningbo University 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2014年第57卷第9期

页      面：1805-1808页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 070202[理学-粒子物理与原子核物理] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11147017 and 11347605) the"Applied Nonlinear Science and Technology of Zhejiang Province(Grant No.zx2012000070) the Ministry of Education Doctoral Program Funds(Grant No.20126101110004) 

主　　题：cosmological evolution scaling attractor dark sector quintessence 

摘      要：Dark energy and dark matter are only indirectly measured though their gravitational *** is possibie that there is some direct,non-gravitational interaction between DE and DM,which can be used to solve(or,at least alleviate)several important theoretical *** the present work,by analysing the cosmological dynamical system with a dark-sector interaction which changes its sign during the cosmological evolution,we find a scaling attractor to help to alleviate the cosmic-coincidence *** result shows that this interaction can bring new features to the cosmology.