【报告题目】Origin of quantum supersonic phenomenon in one dimension
【报 告 人】管习文 中科院精密测量研究院
【报告时间】5月30日（星期二） 上午10：30
【报告地点】29幢414
【报告摘要】The non-equilibrium dynamics of a supersoni impurity injected into one-dimensional (1D) medium of quantum liquid can exhibit collective features of quantum flutter. This phenomenon presents a coherent oscillation between the exciton- and polaronic-like states based on the variational wave function approach. However, a rigorous understanding of the supersonic impurity dynamics beyond the variational wave functions is still lacking.In this talk, building on exact solution, we will report on rich features of quantum flutter and revival of a supersonic impurity in the medium of 1D bosonic liquid. We show that two types of eigenstates elegantly determine the oscillation nature of the quantum flutter with a periodicity which is simply given by the inverse of the difference between the charge and spin dressed energies. While we also observe quantum revival dynamics with a larger periodicity that essentially reveals the quantum reflection of excitations induced by the periodic boundary conditions of a finite length L. Our results reveal a microscopic origin of quantum supersonic phenomenon and shed light on quantum resources with the impurity systems.
【报告人简介】管习文1998年吉林大学博士毕业后到2002年期间在德国和巴西从事博士后研究。2003-2012期间在澳大利亚国立大学（ANU）物理与工程研究院任研究员、高级研究员，2012年10任中科院精密测量科学与技术创新研究院（前武汉物理与数学研究所）研究员，自2016任ANU的荣誉教授。现任《Journal of Physics A》的执行编辑，并担任The International Union of Pure and Applied Physics (IUPAP) C18数学物理委员。管习文长期从事冷原子少体和多体物理系统和自旋系统的严格解研究，取得了一系列在国际上颇具影响力的研究成果。至今发表140余篇SCI论文，包括世界物理顶尖期刊《Science》、《Review of Modern Physics》、《Advance in Physics》、《Nature》子刊、《National Science Review》、《Physical Review Letters》等。
【邀 请 人】高先龙教授
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