Rational boundary charge in one-dimensional systems with interaction and disorder
We study the boundary charge Q_{B} of generic semi-infinite one-dimensional insulators with translational invariance and show that nonlocal symmetries (i.e., including translations) lead to rational quantizations p/q of Q_{B}. In particular, we find that (up to an unknown integer) the quantization o...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2020-09-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.033345 |