Huazhong Univ Sci & Technol, Dept Phys, Wuhan 430074, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China
英文摘要:
The differential acceleration between a rotating mechanical gyroscope and a non-rotating one is directly measured by using a double free-fall interferometer, and preliminary 20-cm experimental results show that no apparent differential acceleration has been observed at the relative level of 2x10(-6). This means that the equivalence principle is still valid for rotating extended bodies, i.e., the spin-gravitation interaction between the extended bodies has not been observed at this level. A careful error analysis is presented, and the according experimental improvement is achieved. The current background limit for 10 m-free-fall comes to about 2.6x10(-7).
Zhou, ZB,Luo, J,Wu, ZG,et al. Search for the spin-spin interaction between rotating extended bodies[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS D,2002,11(7):1149-1158.
