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DMRG analysis of the SDW-CDW crossover region in the 1D half-filled Hubbard-Holstein model
- In order to clarify the physics of the crossover from a spin-density-wave (SDW) Mott insulator to a charge-density-wave (CDW) Peierls insulator in one-dimensional (1D) systems, we investigate the Hubbard-Holstein Hamiltonian at half filling within a density matrix renormalisation group (DMRG) approach. Determining the spin and charge correlation exponents, the momentum distribution function, and various excitation gaps, we confirm that an intervening metallic phase expands the SDW-CDW transition in the weak-coupling regime.
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| Author: | S Ejima, H Fehske |
|---|---|
| URN: | urn:nbn:de:gbv:9-opus-59756 |
| DOI: | https://doi.org/10.1088/1742-6596/200/1/012031 |
| ISSN: | 1742-6596 |
| Parent Title (English): | Journal of Physics: Conference Series |
| Publisher: | IOP Publishing |
| Place of publication: | Bristol |
| Document Type: | Conference Proceeding |
| Language: | English |
| Date of first Publication: | 2010/01/01 |
| Release Date: | 2022/12/01 |
| GND Keyword: | - |
| Volume: | 200 |
| Article Number: | 012031 |
| Page Number: | 4 |
| Faculties: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik |
| Licence (German): |  Creative Commons - Namensnennung |