The 317th MANA Special Seminar

Prof. Yasuhiro Hatsugai

Date March 6, Friday
Time 16:30-17:15
Place Auditorium, 1F, WPI - MANA Bldg., NAMIKI Site, NIMS

Download PDF file for seminar info.

16:30-17:15

Topological phases and bulk-edge correspondence

Quantum/spin liquids are states without any fundamental symmetry breaking. They are featureless as a bulk but some of them possess characteristic boundary states with edges or impurities. Historical and typical examples are quantum Hall states and Haldane spin chain. Quantum spin Hall states as the topological insulators also belong to it. Many of them are topologically nontrivial and it implies the existence of edges states and vice versa. This is the bulk-edge correspondence, which is further applied for variety of quantum states such as graphene, anisotropic-superconductors, cold atoms and photonics crystals. We will explain idea of topological phases and the bulk-edge correspondence supplemented with examples.


Speaker

Prof. Yasuhiro Hatsugai, Institute of Physics, Tsukuba University, Japan

Chair

Dr. Xiao Hu, MANA PI, MANA, NIMS