Bose-Hubbard triangular ladder in an artificial gauge field
We consider interacting bosonic particles on a two-leg triangular ladder in the presence of an artificial gauge field. We employ density matrix renormalization group numerical simulations and analytical bosonization calculations to study the rich phase diagram of this system. We show that the interp...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2023-02-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.5.013126 |
| _version_ | 1797210552004509696 |
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| author | Catalin-Mihai Halati Thierry Giamarchi |
| author_facet | Catalin-Mihai Halati Thierry Giamarchi |
| author_sort | Catalin-Mihai Halati |
| collection | DOAJ |
| description | We consider interacting bosonic particles on a two-leg triangular ladder in the presence of an artificial gauge field. We employ density matrix renormalization group numerical simulations and analytical bosonization calculations to study the rich phase diagram of this system. We show that the interplay between the frustration induced by the triangular lattice geometry and the interactions gives rise to multiple chiral quantum phases. Phase transitions between superfluid to Mott-insulating states occur, which can have Meissner or vortex character. Furthermore, a state that explicitly breaks the symmetry between the two legs of the ladder, the biased chiral superfluid, is found for values of the flux close to π. In the regime of hard-core bosons, we show that the extension of the bond order insulator beyond the case of the fully frustrated ladder exhibits Meissner-type chiral currents. We discuss the consequences of our findings for experiments in cold atomic systems. |
| first_indexed | 2024-04-24T10:12:24Z |
| format | Article |
| id | doaj.art-fe04159cd1d543b7975970c749ffa1be |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:12:24Z |
| publishDate | 2023-02-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-fe04159cd1d543b7975970c749ffa1be2024-04-12T17:28:39ZengAmerican Physical SocietyPhysical Review Research2643-15642023-02-015101312610.1103/PhysRevResearch.5.013126Bose-Hubbard triangular ladder in an artificial gauge fieldCatalin-Mihai HalatiThierry GiamarchiWe consider interacting bosonic particles on a two-leg triangular ladder in the presence of an artificial gauge field. We employ density matrix renormalization group numerical simulations and analytical bosonization calculations to study the rich phase diagram of this system. We show that the interplay between the frustration induced by the triangular lattice geometry and the interactions gives rise to multiple chiral quantum phases. Phase transitions between superfluid to Mott-insulating states occur, which can have Meissner or vortex character. Furthermore, a state that explicitly breaks the symmetry between the two legs of the ladder, the biased chiral superfluid, is found for values of the flux close to π. In the regime of hard-core bosons, we show that the extension of the bond order insulator beyond the case of the fully frustrated ladder exhibits Meissner-type chiral currents. We discuss the consequences of our findings for experiments in cold atomic systems.http://doi.org/10.1103/PhysRevResearch.5.013126 |
| spellingShingle | Catalin-Mihai Halati Thierry Giamarchi Bose-Hubbard triangular ladder in an artificial gauge field Physical Review Research |
| title | Bose-Hubbard triangular ladder in an artificial gauge field |
| title_full | Bose-Hubbard triangular ladder in an artificial gauge field |
| title_fullStr | Bose-Hubbard triangular ladder in an artificial gauge field |
| title_full_unstemmed | Bose-Hubbard triangular ladder in an artificial gauge field |
| title_short | Bose-Hubbard triangular ladder in an artificial gauge field |
| title_sort | bose hubbard triangular ladder in an artificial gauge field |
| url | http://doi.org/10.1103/PhysRevResearch.5.013126 |
| work_keys_str_mv | AT catalinmihaihalati bosehubbardtriangularladderinanartificialgaugefield AT thierrygiamarchi bosehubbardtriangularladderinanartificialgaugefield |