单阱中标量玻色子的碎裂多体基态
Fragmented many-body ground states for scalar bosons in a single trap
摘要：
我们研究了具有局域非均匀单粒子轨道和各向异性长程相互作用（例如偶极-偶极相互作用）的广义双模模型中玻色子的多体基态是相干态还是分裂态.结果表明，碎片可以发生在一个单一的陷阱的相互作用耦合的正值，这意味着该系统是潜在的稳定。此外，破碎的程度被证明是不敏感的单粒子水平上的小扰动。
英文摘要：
We investigate whether the many-body ground states of bosons in a generalized two-mode model with localized inhomogeneous single-particle orbitals and anisotropic long-range interactions (e.g. dipole-dipole interactions), are coherent or fragmented. It is demonstrated that fragmentation can take place in a single trap for positive values of the interaction couplings, implying that the system is potentially stable. Furthermore, the degree of fragmentation is shown to be insensitive to small perturbations on the single-particle level.
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