期刊
PHYSICAL REVIEW B
卷 84, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.84.054451
关键词
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资金
- Spanish MICINN (Juan de la Cierva) [FIS2008-01236, FIS2008-00784]
- Generalitat de Catalunya [2005SGR-00343]
- ERC (QUAGATUA)
- EU (AQUTE, NAMEQUAM)
- NSF [PHY005-51164]
- ICREA Funding Source: Custom
The Heisenberg model for spin-1 bosons in one dimension presents many different quantum phases, including the famous topological Haldane phase. Here we study the robustness of such phases in front of a SU(2) symmetry-breaking field as well as the emergence of unique phases. Previous studies have analyzed the effect of such uniaxial anisotropy in some restricted relevant points of the phase diagram. Here we extend those studies and present the complete phase diagram of the spin-1 chain with uniaxial anisotropy. To this aim, we employ the density-matrix renormalization group together with analytical approaches. The complete phase diagram can be realized using ultracold spinor gases in the Mott insulator regime under a quadratic Zeeman effect.
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