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报告题目: Probing spin-charge separation with quantum criticality
报告人: Prof. Xiwen Guan
Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences
Department of Theoretical Physics, Research School of Physics and Engineering, Australian National
University, Canberra
时间:2018年3月26 日 星期一 上午10:30-12:00
地点:物电学院报告厅
报 告 摘 要
The spin-charge separation is the hallmark of the low energy physics in one dimension (1D). However, such a unique 1D phenomenon still lacks a comprehensive understanding in experiment. In this talk, we will discuss this novel quantum separation with quantum criticality of ultracold atoms. We will show that two-component ultracold Fermi and Bose gases exhibit different spin charge separation mechanisms. The former can form two Luttinger liquids (LLs) with different propagation velocities in charge and spin degrees of freedom. Whereas, the latter gives rise to the separation of a single LL from the bound states of spin waves. Such difference results in significantly different quantum power law scalings in magnetic and thermal properties, providing a fundamental understanding of quantum criticality and quantum liquids.
报 告人简介:
管习文研究员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物理与工程研究院任研究员、高级研究员,2012年10月以优秀海外人才被引进中科院武汉物理与数学研究所工作,2014年10月任二级研究员。美国哈佛大学、洛斯阿拉莫斯国家实验室等世界一流研究机构的高级访问学者, 清华大学高等研究院客座教授,香港中文大学杨振宁访问学人。国家自然基金重点项目及科技部重点专项的首席专家,Journal of Physics A的Advisory Panel成员。管习文长期从事冷原子少体和多体物理系统以及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100余篇SCI论文,包括世界顶尖期刊Review of Modern Physics、Advance in Physics、Nature Communications、Physical Review Letters等。