Fermionic Symmetry Protected Topological Phase Induced by Interactions
| Autor: | Shang-Qiang Ning, Zheng-Xin Liu, Hong-Chen Jiang |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Physics
Charge conservation Strongly Correlated Electrons (cond-mat.str-el) FOS: Physical sciences 02 engineering and technology Fermion Renormalization group Global symmetry 021001 nanoscience & nanotechnology Condensed Matter Physics Topology 01 natural sciences Symmetry protected topological order Electronic Optical and Magnetic Materials Condensed Matter - Strongly Correlated Electrons T-symmetry Topological insulator 0103 physical sciences Condensed Matter::Strongly Correlated Electrons 010306 general physics 0210 nano-technology Topological quantum number |
| DOI: | 10.48550/arxiv.1412.0092 |
| Popis: | Strong interactions can give rise to new fermionic symmetry protected topological phases which have no analogs in free fermion systems. As an example, we have systematically studied a spinless fermion model with $U(1)$ charge conservation and time reversal symmetry on a three-leg ladder using density-matrix renormalization group. In the non-interacting limit, there are no topological phases. Turning on interactions, we found two gapped phases. One is trivial and is adiabatically connected to a band insulator, while another one is a nontrivial symmetry protected topological phase resulting from strong interactions. Comment: 5 page, 6 figures |
| Databáze: | OpenAIRE |
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