20171215 邀请报告 中国人民大学 张芃教授
发布人:芮莹  发布时间:2017-12-06   动态浏览次数:13

报告时间:2017年12月15日10:00-11:00
报告地点:近代物理系210会议室
报告人:张芃教授(中国人民大学)
报告题目:Center of Mass Momentum Dependent Interaction Between Ultracold Atoms
报告摘要:We show that a new type of two-body interaction, which depends on the momentum of the center of mass (CoM) of these two particles, can be realized in ultracold atom gases with a laser-modulated magnetic Feshbach resonance (MFR). Here the MFR is modulated by two laser beams propagating along different directions, which can induce Raman transition between two-body bound states. The Doppler effect causes the two-atom scattering length to be strongly dependent on the CoM momentum of these two atoms. As a result, the effective two-atom interaction is CoM-momentum dependent, while the one-atom free Hamiltonian is still the simple kinetic energy p2/(2m).
张芃教授简介:http://www.phys.ruc.edu.cn/contents/25/51.html