报告时间: 9月9日 周五上午 10:00 地点: 3-S408
报告人: 易俗，中国科学院理论物理研究所研究员。2005年10月入选中科院“百人计划”，2010年获得国家“杰出青年基金”资助。主要从事与超冷原子物理相关的理论研究，在相关领域发表SCI论文70余篇，包括12篇PRL，SCI他引2000余次。
标题：A self-consistent theory for quantum droplets of atomic gases
摘要: The recent experimental realization of quantum droplets in both dipolar gases and Bose mixtures is one of the major developments in ultracold atomic physics. Because these droplets emerge in the mean-field collapse regime with sufficiently large attractive inter-atomic interactions, they may represent a new state of matter in dilute atomic gases. For this system, the questions of primary importance are the stabilization mechanism and the quantum state of the droplets. A widely accepted theory for the droplet state is the extended Gross-Pitaevskii equation, which incorporate quantum fluctuation through Lee-Huang-Yang correction. This theory possesses an intrinsic flaw due to the imaginary Bogoliubov modes in the mean-field collapse regime, which invalidate the LHY correction. In this talk, I will present our results for the properties of the droplet states in dipolar condensates. We tackle the problem using the Gaussian-state theory which treats the quantum fluctuation in a self-consistent manner and our results are in good agreement with the experimental measurements.
