Static electric field in one-dimensional insulators without boundaries
In this brief report, we show that in a one-dimensional insulating system with periodic boundary conditions, the coefficient of the θ term in the effective theory is not only determined by the topological index ∫i∑[superscript α]∈[superscript occ]〈u[superscript k]α|∂/∂k|u[superscript kα]〉dk. Specifi...
| Main Authors: | , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
American Physical Society (APS)
2012
|
| Online Access: | http://hdl.handle.net/1721.1/69140 https://orcid.org/0000-0001-7809-8157 |