Dynamics of k-essence in loop quantum cosmology  

作　　者：Jiali Shi Jian-Pin Wu 石家丽;吴健聘(College of Physical Science and Technology,Bohai University,Jinzhou 121013,China;Center for Gravitation and Cosmology,College of Physical Science and Technology,Yangzhou University,Yangzhou 225009,China)

机构地区：[1]College of Physical Science and Technology,Bohai University,Jinzhou 121013,China [2]Center for Gravitation and Cosmology,College of Physical Science and Technology,Yangzhou University,Yangzhou 225009,China

出　　处：《Chinese Physics C》2021年第4期451-461,共11页中国物理C（英文版）

基　　金：Supported by the Natural Science Foundation of China(11775036);Fok Ying Tung Education Foundation(171006);Jian-Pin Wu is also supported by Top Talent Support Program from Yangzhou University.

摘　　要：In this paper,we study the dynamics of k-essence in loop quantum cosmology(LQC).The study indicates that the loop quantum gravity(LQG)effect plays a key role only in the early epoch of the universe and is diluted in the later stages.The fixed points in LQC are basically consistent with those in standard Friedmann-Robertson-Walker(FRW)cosmology.For most of the attractor solutions,the stability conditions in L Q C are in agreement with those for the standard FRW universe.For some special fixed points,however,tighter constraints are imposed thanks to the LQG effect.

关 键 词：K-ESSENCE loop quantum cosmology dynamics of dark energy 

分 类 号：O572[理学—粒子物理与原子核物理] O413[理学—物理]