Concurrence and entanglement on a 16-site spin-1/2 pyrochlore cluster
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866917982182047744 |
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| author | Wei, C. Curnoe, S. H. |
| author_facet | Wei, C. Curnoe, S. H. |
| contents | We examine the entanglement of the ground state of a 16-site spin-1/2 pyrochlore cluster in the quantum spin ice regime via various calculations of ${\cal I}$-concurrence. Exact ground state solutions to a quantum spin Hamiltonian with four nearest-neighbour exchange parameters were obtained using exact diagonalization. We present results for the ground state ${\cal I}$-concurrence in a region within the parameter space of the model where the ground state is a singlet. We discuss variations in the ${\cal I}$-concurrence in the context of the composition of the ground state and we demonstrate how a lattice distortion disentangles the state. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_09576 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Concurrence and entanglement on a 16-site spin-1/2 pyrochlore cluster Wei, C. Curnoe, S. H. Strongly Correlated Electrons We examine the entanglement of the ground state of a 16-site spin-1/2 pyrochlore cluster in the quantum spin ice regime via various calculations of ${\cal I}$-concurrence. Exact ground state solutions to a quantum spin Hamiltonian with four nearest-neighbour exchange parameters were obtained using exact diagonalization. We present results for the ground state ${\cal I}$-concurrence in a region within the parameter space of the model where the ground state is a singlet. We discuss variations in the ${\cal I}$-concurrence in the context of the composition of the ground state and we demonstrate how a lattice distortion disentangles the state. |
| title | Concurrence and entanglement on a 16-site spin-1/2 pyrochlore cluster |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2409.09576 |