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Symmetry, topology and their waltz in condensed matter systems
2016-12-23  【 】【打印】【关闭

Institute of Theoretical Physics

Chinese Academy of Sciences

 Key Laboratory of Theoretical Physics

Lunch Seminar

Title

题目

Symmetry, topology and their waltz in condensed matter systems

Speaker

报告人

Prof. Xie Chen

Affiliation

所在单位

California Institute of Technology

Date

日期

12月23日(星期五),中午12点

Venue

地点

Conference Hall 322, ITP/理论物理所322报告厅

 

Abstract

摘要

Condensed matter systems that look totally different on the microscopic scale can share surprisingly universal properties on the macroscopic level. For example, compounds with different components, different lattice structure and different forms of interaction can all be magnetic, or all become superconducting, or have exactly the same quantized conductivity. How to understand the emergence of universality out of the varied microscopic details? Two of the key guiding principles are symmetry and topology. Symmetry and topology are fundamental in shaping our current understanding of the condensed matter phase diagram. Moreover, the combination of the two leads to new excitement in the field. In this talk, we discuss how symmetry and topology can cooperate to generate exotic macroscopic properties beyond conventional understanding. Examples include symmetry protection of gapless edge excitation around a topological bulk and symmetry enrichment of fractional topological order.

Contact Person

所内联系人

周森
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