Cosmic acceleration caused by the extra-dimensional evolution in a generalized Randall-Sundrum model

作     者：Guang-Zhen Kang De-Sheng Zhang Chao Shi Long Du Dan Shan Hong-Shi Zong 康广震;张德生;史潮;杜龙;单丹;宗红石

作者机构：School of ScienceYangzhou Polytechnic InstituteYangzhou 225127China Department of PhysicsNanjing UniversityNanjing 210093China School of ScienceChangzhou Institute of TechnologyChangzhou 213032China Department of Nuclear Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjing 211106China School of ScienceGuangxi University of Science and TechnologyLiuzhou 545006China Department of PhysicsAnhui Normal UniversityWuhu 241000China Nanjing Proton Research and Design CenterNanjing 210093China 

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

年 卷 期：2020年第44卷第11期

页      面：213-219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 the Key Program of National Natural Science Foundation of China(11535005) the National Natural Science Foundation of China(11647087) Foundation for Young and Yiddle-Aged Teachers Basic Ability Improvement in Guangxi Universities(2018KY0326) Special Foundation for Science and Technology Base and Talents in Guangxi(2018AD19310) China Postdoctoral Science Foundation funded project(2019M651750) Open project of state key laboratory of solid state microstructure physics(M31037) the Natural Science Foundation of Yangzhou Polytechnic Institute(201917) the Natural Science Foundation of Changzhou Institute of Technology(YN1509) 

主　　题：Hubble parameter extra dimensions anisotropic 

摘      要：We investigate an(n+1)-dimensional generalized Randall-Sundrum model with an anisotropic metric which has three different scale *** obtains a positive effective cosmological constant Ωeff∼10^−124(in Planck units),which only needs a solution kr≃50−80 without fine *** the visible and hidden brane tensions are positive,which renders the two branes ***,we find that the Hubble parameter is close to a constant in a large region near its minimum,thus causing the acceleration of the ***,the scale of extra dimensions is smaller than the observed scale but greater than the Planck *** may suggest that the observed present acceleration of the universe is caused by the extra-dimensional evolution.