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From asymmetry to correlations

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讲座题目:From asymmetry to correlations
讲座人: 李楠 研究员
讲座时间:10:10
讲座日期:2020-11-26
地点:腾讯会议 ID:834 559 418

讲座人简介:

李楠,中国科学院数学与系统科学研究院副研究员。2018年入选中国科学院数学与系统科学研究院陈景润未来之星计划。主要研究方向为量子信息理论,包括量子关联理论,量子测量问题等。

讲座简介:

Symmetry, as well as the dual concept of asymmetry, are essential, powerful, and ubiquitous in physics and nature. Motivated by the original Wigner-Yanase skew information and its extension by Dyson (Wigner E. P. and Yanase M. M., Proc. Natl. Acad. Sci. U.S.A., 49 (1963) 910), which quantifies the information content of a quantum state skew to a conserved observable and may be reinterpreted as asymmetry of a state with respect to an observable, we address the issue of quantifying asymmetry and symmetry of states with respect to Lie groups and Lie algebras. We elucidate that correlations arise naturally from the difference between asymmetries of global and local states. This provides a fundamental insight into correlations. The idea is further illustrated by several examples.


 
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