时 间: 2010年9月21日（周二）上午10:30

地 点: 清华大学高等研究院 科学馆322报告厅

题 目: Relaxation of a High-Energy Quasiparticle in a One-Dimensional Bose Gas

报 告 人: Shina Tan (Assistant Professor) Georgia Institute of Technology

报告摘要:A one-dimensional Bose gas with pairwise delta function interaction can not come to thermal equilibrium because of its integrability. There are two typical factors in real systems that break integrability and bring about thermalization: the 3-body interaction and the external confinement potential. In this talk the effects of the three-body interaction are discussed. More specifically, the relaxation rate of a high-energy particle injected into the system is computed. It shows profound dependence on the temperature at weak coupling. The differential relaxation rate at large energy transfers is proportional to the local pair correlation.