Entanglement in disordered and non-equilibrium systems
We calculate an entanglement witness for a disordered spin system using the method of functional many-body perturbation theory, comparing the effect of taking a quenched and an annealed average over the disorder. We find, on considering the example of an XX Heisenberg spin chain with a Dzyaloshinski...
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| Format: | Conference item |
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2010
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| _version_ | 1826306148984160256 |
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| author | Hide, J Vedral, V |
| author_facet | Hide, J Vedral, V |
| author_sort | Hide, J |
| collection | OXFORD |
| description | We calculate an entanglement witness for a disordered spin system using the method of functional many-body perturbation theory, comparing the effect of taking a quenched and an annealed average over the disorder. We find, on considering the example of an XX Heisenberg spin chain with a Dzyaloshinskii-Moriya interaction, that disorder in the Dzyaloshinskii-Moriya interaction increases the region of entanglement detected by the witness. We also discuss a method of detecting entanglement in far from equilibrium systems. © 2009 Elsevier B.V. All rights reserved. |
| first_indexed | 2024-03-07T06:43:33Z |
| format | Conference item |
| id | oxford-uuid:fa1d038b-3066-4d1c-9bca-41e350905be1 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T06:43:33Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | oxford-uuid:fa1d038b-3066-4d1c-9bca-41e350905be12022-03-27T13:03:10ZEntanglement in disordered and non-equilibrium systemsConference itemhttp://purl.org/coar/resource_type/c_5794uuid:fa1d038b-3066-4d1c-9bca-41e350905be1Symplectic Elements at Oxford2010Hide, JVedral, VWe calculate an entanglement witness for a disordered spin system using the method of functional many-body perturbation theory, comparing the effect of taking a quenched and an annealed average over the disorder. We find, on considering the example of an XX Heisenberg spin chain with a Dzyaloshinskii-Moriya interaction, that disorder in the Dzyaloshinskii-Moriya interaction increases the region of entanglement detected by the witness. We also discuss a method of detecting entanglement in far from equilibrium systems. © 2009 Elsevier B.V. All rights reserved. |
| spellingShingle | Hide, J Vedral, V Entanglement in disordered and non-equilibrium systems |
| title | Entanglement in disordered and non-equilibrium systems |
| title_full | Entanglement in disordered and non-equilibrium systems |
| title_fullStr | Entanglement in disordered and non-equilibrium systems |
| title_full_unstemmed | Entanglement in disordered and non-equilibrium systems |
| title_short | Entanglement in disordered and non-equilibrium systems |
| title_sort | entanglement in disordered and non equilibrium systems |
| work_keys_str_mv | AT hidej entanglementindisorderedandnonequilibriumsystems AT vedralv entanglementindisorderedandnonequilibriumsystems |