Domain-wall/overlap, and topological insulators

by Dr Taro Kimura (Keio University)

Monday 19 Oct 2015, 13:30 → 14:30 Asia/Tokyo

Room 433, Main Research Building (RIKEN Wako)

Date: Oct 19 (Mon) Time: 13:30 - Place: Main Research bldg. 433 Speaker: Taro Kimura (Keio University) Title: Domain-wall/overlap, and topological insulators Abstract: Topological insulators are a new class of materials which have gapped spectra in the bulk, but are accompanied by topologically protected gapless excitations at the surface (edge) of the system. These phenomena have a close relationship with symmetry and dimensionality of the system through quantum anomalies. We point out that such a surface state is a physical realization of the domain-wall/overlap fermion. From this point of view, we discuss its implications for experiments of topological insulators. We also discuss an unconventional overlap fermion, which is suggested by the “periodic table" of topological insulators and superconductors. See more QHP seminars