简介：Permanent electric dipole moments (EDMs) in atoms or molecules are a signature of Time (T)-and Parity (P)-violation and represent an important window onto physics beyond the Standard Model. We are developing a next-generation EDM search around laser-cooled and -trapped Ra-225 (half-life = 15 d) atoms. Due to octupole deformation of the nucleus, Ra-225 is predicted to be two to three orders of magnitude more sensitive to T-violating interactions than Hg-199 (stable), which currently sets the most stringent limits in the nuclear sector. I will present our progress towards an EDM measurement on Ra-225 based on an optical dipole trap.

卢征天：科大82少校友，1994年在UC Berkeley获博士学位，2000年获美国青年科学家总统奖，现为美国阿贡国家实验室高级科学家、芝加哥大学教授，美国物理学会APS Fellow。