Parity and Time Reversal Tests in Atoms

原子宇称和时间反转测试

• 批准号: 9206408
• 负责人: Norval Fortson
• 金额: $ 66.53万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-05-15 至 1995-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9206408&HistoricalAwards=false
• 关键词: Parity; Time; Reversal; Tests; Atoms

Professor Fortson and his research group are engaged in the search for the electric dipole moment of the electron. According to standard theory, the electron is a structureless point particle with unit negative charge and therefore must have a zero electric dipole moment. However very precise, very sensitive searches for a nonzero measurement are important because a nonzero dipole moment would imply that parity-time reversal symmetry is violated in nature. In his latest results Professor Fortson sees a suggestion of a possible nonzero result just at the limits of his instrumental detection sensitivity. This new grant would permit him to improve his sensitivity sufficiently to declare with certainty whether or not the electric dipole moment of the electron has been found.

Fortson教授和他的研究小组致力于寻找电子的电偶极矩。 根据标准理论，电子是具有单位负电荷的无结构点粒子，因此电偶极矩必须为零。 然而，对非零测量的非常精确、非常敏感的搜索很重要，因为非零偶极矩意味着宇称时间反转对称性本质上被破坏。 福特森教授在他的最新结果中看到了在他的仪器检测灵敏度极限下可能出现的非零结果的暗示。 这项新的资助将使他能够充分提高他的灵敏度，以肯定地宣布电子的电偶极矩是否已经被发现。