报告题目：玻色爱因斯坦凝聚的孤子扩散研究霍金辐射 (Soliton Diffusion as a Signature of Hawking Radiation in Bose-Einstein Condensates)
报 告 人：杭超 研究员 (华东师范大学精密光谱科学与技术国家重点实验室)
报告时间：2018年4月18日 （周三） 上午10：00
报告地点：校本部G309
邀请人：张永平
报告摘要：
We propose a scheme to detect analogue Hawking radiation in an atomic Bose-Einstein condensate (BEC) through measuring the diffusion of a dark soliton. The Hawking radiation is generated by changing the transverse trapping potential of the BEC to make the velocity of a background flow subsonic in downstream and supersonic in upstream. When the system is in thermal equilibrium at Hawking temperature, a dark soliton is created in the upstream. Due to the influence of the Hawking radiation, the dark soliton undergoes a Brownian-like motion and hence exhibits an apparent diffusion, which can be measured and can be taken as a signal of the Hawking radiation.
