文献类型：期刊文献

英文题名：Testing spatial noncommutativity via Rydberg atoms

作者：Zhang, Jian-Zu[1]

机构：[1]E China Univ Sci & Technol, Inst Theoret Phys, Shanghai 200237, Peoples R China

年份：2004

卷号：93

期号：4

起止页码：043002

外文期刊名：PHYSICAL REVIEW LETTERS

收录：;EI(收录号：2004378351826);WOS:【SCI-EXPANDED(收录号:WOS:000222856400021)】；

语种：英文

外文关键词：Electric fields - Hamiltonians - Ionization - Kinetic energy - Lagrange multipliers - Magnetic fields - Natural frequencies - Parameter estimation - Perturbation techniques - Quantum theory - Resonance - Tensors

摘要：The possibility of testing spatial noncommutativity via Rydberg atoms is explored. An atomic dipole of a cold Rydberg atom is arranged in appropriate electric and magnetic fields, so that the motion of the dipole is constrained to be planar and rotationally symmetric. Spatial noncommutativity leads the canonical angular momentum to possess fractional values. In the limit of vanishing kinetic energy, the dominate value of the lowest canonical angular momentum takes h/2. Furthermore, in the limit of eliminating the magnetic field, the dominate value of the lowest canonical angular momentum changes from (h) over bar /2 to (h) over bar /4. This result is a clear signal of spatial noncommutativity. An experimental verification of this prediction is suggested.