Proposed Space Test of the New Equivalence Principle with Rotating Extended Bodies  

作　　者：韩丰田 吴秋平 周泽兵 张元仲 

机构地区：[1]Department of Precision Instrument, Tsinghua University, Beijing 100084 [2]School of Physics, Huazhong University of Science and Technology, Wuhan 430074 [3]Institute of Theoretical Physics, Chinese Academy of Sciences, Belting 100190

出　　处：《Chinese Physics Letters》2014年第11期18-22,共5页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 61374207 and 91436107.

摘　　要：We propose a novel scheme for a space free-fall based test of the new equivalence principle （NEP） with two rotating extended bodies made of the same material. The measurement will be carried out by placing the two concentric spinning masses of very different momenta inside a differential electrostatic aceelerometer in a drag-free compensated orbit. A difference in the forces necessary to maintain the common trajectory will be an indication of a violation of equivalence or the existence of spin-spin force between the rotating mass and the Earth. The conceptual design of the inertial sensor and its operation mode is presented. Details specific to the model and performance requirements are discussed by using up-to-date space technologies to test the NEP with an accuracy of better than 10^-15.We propose a novel scheme for a space free-fall based test of the new equivalence principle （NEP） with two rotating extended bodies made of the same material. The measurement will be carried out by placing the two concentric spinning masses of very different momenta inside a differential electrostatic aceelerometer in a drag-free compensated orbit. A difference in the forces necessary to maintain the common trajectory will be an indication of a violation of equivalence or the existence of spin-spin force between the rotating mass and the Earth. The conceptual design of the inertial sensor and its operation mode is presented. Details specific to the model and performance requirements are discussed by using up-to-date space technologies to test the NEP with an accuracy of better than 10^-15.

分 类 号：O412.1[理学—理论物理] TH222.03[理学—物理]