报告题目：Topological Changes of State in Classical and Quantum Systems

报 告 人：John B. Delos, professor of Physics, College of William and Mary

报告时间：2015年10月14日14：00

报告地点：理科楼三楼报告厅（C302）

报告摘要：One of the topological changes of state exhibited by some systems is called “monodromy”. This can be found in quasi-linear molecules, atoms in a trap, a “swing-spring”, or a hydrogen atom in crossed fields. A quantum manifestation of monodromy is a defect in the lattice of eigenvalues. A dynamical manifestation of monodromy, which will be visible in both classical and quantum systems, will be described in this talk. Especially we discuss how this phenomenon could be observed using a classical pendulum system or ultracold atoms.