Anisotropic pair superfluidity of trapped two-component Bose gases in an optical lattice
We theoretically investigate the pair-superfluid phase of two-component ultracold gases with attractive inter-species interactions in an optical lattice. We establish the phase diagram for filling n = 1 at zero and finite temperatures, by applying bosonic dynamical mean-field theory, and observe st...
| 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/10.1088/1367-2630/15/9/093028 |
| _version_ | 1797751373054345216 |
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| author | Yongqiang Li Liang He Walter Hofstetter |
| author_facet | Yongqiang Li Liang He Walter Hofstetter |
| author_sort | Yongqiang Li |
| collection | DOAJ |
| description | We theoretically investigate the pair-superfluid phase of two-component ultracold gases with attractive inter-species interactions in an optical lattice. We establish the phase diagram for filling n = 1 at zero and finite temperatures, by applying bosonic dynamical mean-field theory, and observe stable pair-superfluid and charge-density wave quantum phases for asymmetric hopping of the two species. While the pair superfluid is found to be robust in the presence of a harmonic trap, we observe that it is destroyed already by a small population imbalance of the two species. |
| first_indexed | 2024-03-12T16:47:33Z |
| format | Article |
| id | doaj.art-5ff42af6bd8c4e108846a4ad71636869 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:47:33Z |
| publishDate | 2013-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-5ff42af6bd8c4e108846a4ad716368692023-08-08T11:29:13ZengIOP PublishingNew Journal of Physics1367-26302013-01-0115909302810.1088/1367-2630/15/9/093028Anisotropic pair superfluidity of trapped two-component Bose gases in an optical latticeYongqiang Li0Liang He1Walter Hofstetter2Institut für Theoretische Physik, Goethe-Universität , D-60438 Frankfurt am Main, Germany; Department of Physics, National University of Defense Technology , Changsha 410073, People's Republic of ChinaInstitut für Theoretische Physik, Goethe-Universität , D-60438 Frankfurt am Main, GermanyInstitut für Theoretische Physik, Goethe-Universität , D-60438 Frankfurt am Main, GermanyWe theoretically investigate the pair-superfluid phase of two-component ultracold gases with attractive inter-species interactions in an optical lattice. We establish the phase diagram for filling n = 1 at zero and finite temperatures, by applying bosonic dynamical mean-field theory, and observe stable pair-superfluid and charge-density wave quantum phases for asymmetric hopping of the two species. While the pair superfluid is found to be robust in the presence of a harmonic trap, we observe that it is destroyed already by a small population imbalance of the two species.https://doi.org/10.1088/1367-2630/15/9/093028 |
| spellingShingle | Yongqiang Li Liang He Walter Hofstetter Anisotropic pair superfluidity of trapped two-component Bose gases in an optical lattice New Journal of Physics |
| title | Anisotropic pair superfluidity of trapped two-component Bose gases in an optical lattice |
| title_full | Anisotropic pair superfluidity of trapped two-component Bose gases in an optical lattice |
| title_fullStr | Anisotropic pair superfluidity of trapped two-component Bose gases in an optical lattice |
| title_full_unstemmed | Anisotropic pair superfluidity of trapped two-component Bose gases in an optical lattice |
| title_short | Anisotropic pair superfluidity of trapped two-component Bose gases in an optical lattice |
| title_sort | anisotropic pair superfluidity of trapped two component bose gases in an optical lattice |
| url | https://doi.org/10.1088/1367-2630/15/9/093028 |
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