BEC2015/16/18

Description of the workshop

Triggered by the discovery of topological insulators, topology is widely accepted as something useful for condensed matter society recently. Its history goes back to the  quantum Hall effect, which is surely one of the most important phenomena in modern condensed matter physics. Topology is, of course, a bit abstract concept in mathematics but is directly applied to explain experiments in the lab. It is a surprise. 

Although topology is used for the theories of the quantum Hall effects and topological insulators and the game could be a fun for physicists, it’s not satisfactory enough as physics since topology is still just a concept and can not be seen for anyone in any sense. 

 The real surprise is that one can observe the topology through edge states as low energy boundary modes living near the system edges and around impurities. These edge states/boundary states are surely physical observables.They are real.  Enormous success of the ARPES (angular resolved photoemission spectroscopy) experiments are the key achievements for the recent big bang in the topological business. Edge states are there as expected. Now topology is at hand for everyone. Topology and the edge states are directly related. This is the bulk-edge correspondence. Topology is now real as well. Then one may understand many of localized modes in quite different areas such as cold atoms, photonics, solid states and even classical mechanics. Some of them are traditional local states/modes and might be well known. But they could be well understood by this new way of thinking. THINK DIFFERENT topologically through the bulk-edge correspondence.  

 The workshop is for people in different fields to get together and discuss topological phases in solids, atoms, light and more. Let's look at physics from boundaries and impurities, which are geometrical perturbation for the bulk. Everyone interested in topological phases/materials/lights are welcome.

 Target systems can be topological materials (topological insulators, (anomalous) quantum (spin/valley) Hall states, graphene, silicene, anisotropic superconductors, Majorana/Andreev bound states), photonics crystals, light, topological mechanics and more. People working in topological condensed matter (theories or experiments) without any edge states, that is, bulk, are welcome as well.