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Metallicity in a Holstein-Hubbard Chain at Half Filling with Gaussian Anharmonicity
The Holstein-Hubbard model with Gaussian phonon anharmonicity is studied in one-dimension at half filling using a variational method based on a series of canonical transformations. A fairly accurate phonon state is chosen to average the transformed Holstein-Hubbard Hamiltonian to obtain an effective...
| Autores principales: | , , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
| Publicado: |
Nature Publishing Group UK
2017
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5476603/ https://www.ncbi.nlm.nih.gov/pubmed/28630434 http://dx.doi.org/10.1038/s41598-017-03985-2 |