Date:10:30am, Sep.21, 2010

Venue：Conference Hall 322，Science Building

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

Speaker: Shina Tan (Assistant Professor) Georgia Institute of Technology

Abstract: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.