Entanglement-enhanced spreading of correlations
Starting from a product initial state, equal-time correlations in nonrelativistic quantum lattice models propagate within a light cone-like causal region. The presence of entanglement in the initial state can modify this behaviour, enhancing and accelerating the growth of correlations. In this paper...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2015-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/17/12/123024 |
| _version_ | 1797751022517485568 |
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| author | Michael Kastner |
| author_facet | Michael Kastner |
| author_sort | Michael Kastner |
| collection | DOAJ |
| description | Starting from a product initial state, equal-time correlations in nonrelativistic quantum lattice models propagate within a light cone-like causal region. The presence of entanglement in the initial state can modify this behaviour, enhancing and accelerating the growth of correlations. In this paper we give a quantitative description, in the form of Lieb-Robinson-type bounds on equal-time correlation functions, of the interplay of dynamics versus. initial entanglement in quantum lattice models out of equilibrium. The bounds are tested against model calculations, and applications to quantum quenches, quantum channels, and Kondo physics are discussed. |
| first_indexed | 2024-03-12T16:42:19Z |
| format | Article |
| id | doaj.art-44b893d7cf474b16a19cd80520ddede5 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:42:19Z |
| publishDate | 2015-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-44b893d7cf474b16a19cd80520ddede52023-08-08T14:23:43ZengIOP PublishingNew Journal of Physics1367-26302015-01-01171212302410.1088/1367-2630/17/12/123024Entanglement-enhanced spreading of correlationsMichael KastnerStarting from a product initial state, equal-time correlations in nonrelativistic quantum lattice models propagate within a light cone-like causal region. The presence of entanglement in the initial state can modify this behaviour, enhancing and accelerating the growth of correlations. In this paper we give a quantitative description, in the form of Lieb-Robinson-type bounds on equal-time correlation functions, of the interplay of dynamics versus. initial entanglement in quantum lattice models out of equilibrium. The bounds are tested against model calculations, and applications to quantum quenches, quantum channels, and Kondo physics are discussed.https://doi.org/10.1088/1367-2630/17/12/123024entanglementcorrelationslattice modelsnonequilibriumLieb-Robinson bounds |
| spellingShingle | Michael Kastner Entanglement-enhanced spreading of correlations New Journal of Physics entanglement correlations lattice models nonequilibrium Lieb-Robinson bounds |
| title | Entanglement-enhanced spreading of correlations |
| title_full | Entanglement-enhanced spreading of correlations |
| title_fullStr | Entanglement-enhanced spreading of correlations |
| title_full_unstemmed | Entanglement-enhanced spreading of correlations |
| title_short | Entanglement-enhanced spreading of correlations |
| title_sort | entanglement enhanced spreading of correlations |
| topic | entanglement correlations lattice models nonequilibrium Lieb-Robinson bounds |
| url | https://doi.org/10.1088/1367-2630/17/12/123024 |
| work_keys_str_mv | AT michaelkastner entanglementenhancedspreadingofcorrelations |