我们的宇宙与德西特相对论  

Our Universe and the de Sitter Relativity

作　　者：郭汉英[1] 

机构地区：[1]中国科学院理论物理研究所

出　　处：《科学》2008年第6期17-21,共5页Science

基　　金：国家自然科学基金项目(90503002)的部分资助

摘　　要：精确宇宙学揭示，宇宙尺度的物理学应以极小的正宇宙常数为标志。这应受到高度重视。我们认为，较之爱因斯坦相对论，德西特（W．deSitter）相对论，包括德西特狭义相对论和以其局域化为基础的德西特引力，才能更好地反映这一特征。Precise cosmology shows that the cosmic-scale physics is characterized by the cosmological constant.We argue the de Sitter relativity must describe our universe better.This is why our universe is asymptotic to a de Sitter cosmos with entropy bound and an accelerated expanding 3-sphere curved in the order of cosmological constant.Further,it acts as an origin of the inertia in the sense that via the de Sitter cosmos as its fate its time arrow fixes on the inertial systems on the de Sitter space and the local inertial systems in the localization.Thus,without Einstein's 'argument in a circle',the principle of inertia and its localization for gravity provide the consistent benchmarks of physics in the cosmic scale.

关 键 词：惯性原理 局域化 物理基准 引力 熵界 德西特相对论 宇宙尺度 宇宙常数 

分 类 号：P159.2[天文地球—天文学]