01
新物理前沿系列报告
报告题目
QGP整体极化与自旋关联效应
报告人
梁作堂/Zuo-Tang Liang (山东大学)
报告时间
2024年9月24日 15:00
报告地点
理论物理所 北楼322
Zoom ID: 832 7630 0290;
Passcode: 691240
02
讲座预告
报告题目
The On-Shell Techniques on Effective Operators
报告人
肖明磊/Ming-Lei Xiao (中山大学)
报告时间
2024年9月25日 10:00
报告地点
理论物理所 北楼202
讲座内容
Effective operators are the building blocks of effective field theories (EFT), which describe all sorts of interactions among the low energy degrees of freedom under the symmetry constraints. Recent studies manifest the great potential of on-shell techniques for the computations related to effective operators. In this talk, I will show the basic applications of on-shell techniques, including the operator/amplitude correspondence, operator basis construction and the j-basis analysis. In particular, a systematic reduction rule for effective operators is built, which involves a thorough treatment of the field redefinition ambiguity. The rule allows for a clear organization of the results from EFT computations such as matching and running. Future studies on the amplitude construction in EFT may also be introduced.
报告人简介
肖明磊，主要研究方向为高能物理理论，发表论文19篇，主持博士后面上项目1项。研究领域涵盖粒子物理唯象学、宇宙学、量子引力的全息原理、量子信息、散射振幅与有效场论。近年来在有效场论的散射振幅方法上获得了突破性成果，解决了有效场论算符基的冗余问题。
邀请人：于江浩 研究员
03
讲座预告
报告题目
Monogamy of the k-Entanglement
报告人
郭钰/Yu Guo (内蒙古大学)
报告时间
2024年9月26日 10:00
报告地点
腾讯会议号：492-378-724
【蔻享直播&回放】
https://www.koushare.com/live/details/37446
讲座内容
Multipartite entanglement includes not only the genuine entanglement but also the k-entanglement (k≥2). It is known that most bipartite entanglement measures have been shown to be monogamous, but the monogamy relation is involved in the bipartite entanglement measures rather than the multipartite ones. Therefore, how to explore the monogamy relation for k-entanglement becomes a basic open problem. In this talk, we introduced an axiomatic definition of the monogamy relation for the k-entanglement measure based on the coarser relation of the system partition. We also present the axiomatic definition of the complete k-entanglement measure and the associated complete monogamy relation according to the framework of the complete multipartite entanglement measure we established in [Phys. Rev. A 101, 032301 (2020)], which is shown to be an efficient tool for characterizing the multipartite quantum correlation as complementary to the monogamy relation associated with the bipartite measure. Consequently, the relation and the difference between monogamy, complete monogamy, and tightly complete monogamy are clearly depicted in light of the three types of coarser relation of the system partition. We then illustrate our approach with two classes of k-entanglement measures in detail. We find that all these k-entanglement measures are monogamous if the reduced function is strictly concave, and they are not completely monogamous, and in general they are not complete.
报告人简介
郭钰，内蒙古大学数学科学学院教授、博士生导师。主要从事算子理论、算子代数与量子信息交叉领域理论研究。主持在研国家自然科学基金面上项目一项，主持完成国家自然科学基金面上项目、国家自然科学基金青年科学基金项目、中国博士后科学基金项目、山西省自然科学基金面上项目、山西省自然科学基金青年基金项目、山西省留学人员科技活动择优资助项目、山西省高等学校科技创新项目优秀成果培育项目等项目8项。在科学出版社出版专著1部，在 Quantum、Quant. Sci. Tech.、Phys. Rev. A、New J. Phys.、J. Phys. A等杂志发表学术论文50余篇。
邀请人：王东升 副研究员
04
Soft Matter and Biophysics Seminar
报告题目
One Hundred Years of Electrified Interfaces: What's New with the Theories of Debye and Onsager?
报告人
Prof. David Andelman (Tel Aviv University)
报告时间
2024年9月26日 16:00
报告地点
物理所M楼 253会议室
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