Abstract
The many-body Berry phase formula for macroscopic polarization is approximated by a sum of natural orbital geometric phases with fractional occupation numbers accounting for the dominant correlation effects. This formula accurately reproduces the exact polarization in the Rice-Mele-Hubbard model across the band insulator-Mott insulator transition. A similar formula based on a reduced Berry curvature accurately predicts the interaction-induced quenching of Thouless topological charge pumping.
| Original language | English |
|---|---|
| Pages (from-to) | 7045-7051 |
| Number of pages | 7 |
| Journal | Journal of Physical Chemistry Letters |
| Volume | 9 |
| Issue number | 24 |
| DOIs | |
| State | Published - 20 Dec 2018 |
Bibliographical note
Publisher Copyright:© 2018 American Chemical Society.