Commensurate supersolids and re-entrant transitions in an extended Bose-Hubbard ladder
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866911980172869632 |
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| author | Madhusudan, Ashwath N Santra, Gopal Chandra Kaur, Inderpreet Li, Weibin Nath, Rejish |
| author_facet | Madhusudan, Ashwath N Santra, Gopal Chandra Kaur, Inderpreet Li, Weibin Nath, Rejish |
| contents | We investigate the ground state phases of an extended Bose-Hubbard ladder of unit filling via the density-matrix-renormalization-group method and, in particular, the effect of rung-hoppings. In contrast to a single-chain, a commensurate supersolid emerges, and based on the Luttinger parameter, we classify them into two types. The latter leads to a reentrant gapless behavior as the onsite interaction is increased while keeping all other parameters intact. A reentrant gapped transition is also found as a function of nearest-neighbor interactions. Further, we show that the string order characterizing the Haldane phase vanishes for a finite inter-chain hopping amplitude, however small it is. Finally, we propose two experimental platforms to observe our findings, using either dipolar atoms or polar molecules and Rydberg admixed atoms. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_20107 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Commensurate supersolids and re-entrant transitions in an extended Bose-Hubbard ladder Madhusudan, Ashwath N Santra, Gopal Chandra Kaur, Inderpreet Li, Weibin Nath, Rejish Quantum Gases Quantum Physics We investigate the ground state phases of an extended Bose-Hubbard ladder of unit filling via the density-matrix-renormalization-group method and, in particular, the effect of rung-hoppings. In contrast to a single-chain, a commensurate supersolid emerges, and based on the Luttinger parameter, we classify them into two types. The latter leads to a reentrant gapless behavior as the onsite interaction is increased while keeping all other parameters intact. A reentrant gapped transition is also found as a function of nearest-neighbor interactions. Further, we show that the string order characterizing the Haldane phase vanishes for a finite inter-chain hopping amplitude, however small it is. Finally, we propose two experimental platforms to observe our findings, using either dipolar atoms or polar molecules and Rydberg admixed atoms. |
| title | Commensurate supersolids and re-entrant transitions in an extended Bose-Hubbard ladder |
| topic | Quantum Gases Quantum Physics |
| url | https://arxiv.org/abs/2407.20107 |