物理与电子工程学院2017学术论坛之二十五
2017-10-19 20:22   审核人:

时间:20171019日(周四)下午2:00-3:45

地点:理学实验楼718报告厅

 

1)首个双中子星并合引力波事件及其电磁波信号的探测

报告人: 王洪光教授,仝号副教授 (物电学院);

摘要: 1016日,美国国家科学基金会召开新闻发布会,宣布美国LIGO和欧洲Virgo激光干涉引力波天文台于2017817日首次发现双中子星并合引力波事件,随后国际上有许多天文台都观测到了该引力波源的电磁辐射。本报告对该研究进行介绍和解读。

 

2Super fluid properties of spin orbit coupled BEC

报告人:张义财副教授(物电学院)

摘要:In this talk, we discuss the superfluid properties of spin-orbit coupled Bose-Einstein condensate. We find a finite normal fluid density at zero temperature. In particular, the entire fluid becomes normal at transition point from zero momentum to the plane wave phase, even through the condensate fraction remains finite. Our predictions for the superfluid density are successfully compared with the available experimental results based on the measurement of the sound velocities. The relationship between superfluid density and Josephson relation for multI-component bosons are also discussed.

 

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