Non-equilibrium quantum dynamics of ultra-cold atomic mixtures: the multi-layer multi-configuration time-dependent Hartree method for bosons
We develop and apply the multi-layer multi-configuration time-dependent Hartree method for bosons, which represents an ab initio method for investigating the non-equilibrium quantum dynamics of multi-species bosonic systems. Its multi-layer feature allows for tailoring the wave function ansatz to de...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2013-01-01
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| Series: | New Journal of Physics |
| Online Access: | https://doi.org/10.1088/1367-2630/15/6/063018 |
| _version_ | 1797751574178562048 |
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| author | Sven Krönke Lushuai Cao Oriol Vendrell Peter Schmelcher |
| author_facet | Sven Krönke Lushuai Cao Oriol Vendrell Peter Schmelcher |
| author_sort | Sven Krönke |
| collection | DOAJ |
| description | We develop and apply the multi-layer multi-configuration time-dependent Hartree method for bosons, which represents an ab initio method for investigating the non-equilibrium quantum dynamics of multi-species bosonic systems. Its multi-layer feature allows for tailoring the wave function ansatz to describe intra- and inter-species correlations accurately and efficiently. To demonstrate the beneficial scaling and efficiency of the method, we explored the correlated tunneling dynamics of two species with repulsive intra- and inter-species interactions, to which a third species with vanishing intra-species interaction was weakly coupled. The population imbalances of the first two species can feature a temporal equilibration and their time evolution significantly depends on the coupling to the third species. Bosons of the first and second species exhibit a bunching tendency, whose strength can be influenced by their coupling to the third species. |
| first_indexed | 2024-03-12T16:50:30Z |
| format | Article |
| id | doaj.art-4eb71451e51542818265ce1b4ccbae20 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:50:30Z |
| publishDate | 2013-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-4eb71451e51542818265ce1b4ccbae202023-08-08T11:11:25ZengIOP PublishingNew Journal of Physics1367-26302013-01-0115606301810.1088/1367-2630/15/6/063018Non-equilibrium quantum dynamics of ultra-cold atomic mixtures: the multi-layer multi-configuration time-dependent Hartree method for bosonsSven Krönke0Lushuai Cao1Oriol Vendrell2Peter Schmelcher3Zentrum für Optische Quantentechnologien, Universität Hamburg , Luruper Chaussee 149, D-22761 Hamburg, GermanyZentrum für Optische Quantentechnologien, Universität Hamburg , Luruper Chaussee 149, D-22761 Hamburg, Germany; The Hamburg Centre for Ultrafast Imaging , Luruper Chaussee 149, D-22761 Hamburg, GermanyThe Hamburg Centre for Ultrafast Imaging , Luruper Chaussee 149, D-22761 Hamburg, Germany; Center for Free-Electron Laser Science, DESY, Notkestrasse 85, D-22607 Hamburg, GermanyZentrum für Optische Quantentechnologien, Universität Hamburg , Luruper Chaussee 149, D-22761 Hamburg, Germany; The Hamburg Centre for Ultrafast Imaging , Luruper Chaussee 149, D-22761 Hamburg, GermanyWe develop and apply the multi-layer multi-configuration time-dependent Hartree method for bosons, which represents an ab initio method for investigating the non-equilibrium quantum dynamics of multi-species bosonic systems. Its multi-layer feature allows for tailoring the wave function ansatz to describe intra- and inter-species correlations accurately and efficiently. To demonstrate the beneficial scaling and efficiency of the method, we explored the correlated tunneling dynamics of two species with repulsive intra- and inter-species interactions, to which a third species with vanishing intra-species interaction was weakly coupled. The population imbalances of the first two species can feature a temporal equilibration and their time evolution significantly depends on the coupling to the third species. Bosons of the first and second species exhibit a bunching tendency, whose strength can be influenced by their coupling to the third species.https://doi.org/10.1088/1367-2630/15/6/063018 |
| spellingShingle | Sven Krönke Lushuai Cao Oriol Vendrell Peter Schmelcher Non-equilibrium quantum dynamics of ultra-cold atomic mixtures: the multi-layer multi-configuration time-dependent Hartree method for bosons New Journal of Physics |
| title | Non-equilibrium quantum dynamics of ultra-cold atomic mixtures: the multi-layer multi-configuration time-dependent Hartree method for bosons |
| title_full | Non-equilibrium quantum dynamics of ultra-cold atomic mixtures: the multi-layer multi-configuration time-dependent Hartree method for bosons |
| title_fullStr | Non-equilibrium quantum dynamics of ultra-cold atomic mixtures: the multi-layer multi-configuration time-dependent Hartree method for bosons |
| title_full_unstemmed | Non-equilibrium quantum dynamics of ultra-cold atomic mixtures: the multi-layer multi-configuration time-dependent Hartree method for bosons |
| title_short | Non-equilibrium quantum dynamics of ultra-cold atomic mixtures: the multi-layer multi-configuration time-dependent Hartree method for bosons |
| title_sort | non equilibrium quantum dynamics of ultra cold atomic mixtures the multi layer multi configuration time dependent hartree method for bosons |
| url | https://doi.org/10.1088/1367-2630/15/6/063018 |
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