Constructing a variational ground state of matter fermions coupled to a vison pair in Kitaev's honeycomb model
Fuente:
arXiv
Guardado en:
| Autores principales: | , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2025
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866912738585870336 |
|---|---|
| author | Grace, T. Principi, A. |
| author_facet | Grace, T. Principi, A. |
| contents | We develop a new method to construct simple and explicit variational approximations for the ground state of Kitaev's honeycomb model with a non-trivial Z2 flux configuration consisting of a pair of visons on neighbouring plaquettes. The method consists of retaining only the largest singular values of the generator of the transformation between the vison-pair and flux-free ground states. We compare physical quantities calculated using the approximate state to those obtained by extrapolating results of exact diagonalisation of finite lattices, finding them to be in very good agreement. We discuss ways to extend the method to more complicated flux configurations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_15113 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Constructing a variational ground state of matter fermions coupled to a vison pair in Kitaev's honeycomb model Grace, T. Principi, A. Strongly Correlated Electrons We develop a new method to construct simple and explicit variational approximations for the ground state of Kitaev's honeycomb model with a non-trivial Z2 flux configuration consisting of a pair of visons on neighbouring plaquettes. The method consists of retaining only the largest singular values of the generator of the transformation between the vison-pair and flux-free ground states. We compare physical quantities calculated using the approximate state to those obtained by extrapolating results of exact diagonalisation of finite lattices, finding them to be in very good agreement. We discuss ways to extend the method to more complicated flux configurations. |
| title | Constructing a variational ground state of matter fermions coupled to a vison pair in Kitaev's honeycomb model |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2502.15113 |