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摘要翻译：
通过Feshbach共振研究了原子玻色气体，绘制了其相图，计算了其热力学和激发谱。结果表明，这种简并气体存在原子和分子两种不同的超流相，后者的区别在于不存在原子的非对角线长程有序、间隙原子激发和非束缚原子PI涡。研究了分子超流体的性质，发现在Feshbach共振过程中，它经历了量子伊辛跃迁到原子超流体，在原子超流体中原子和分子都发生了凝聚。在陷阱中，分子超流体除了具有独特的热力学特征和非束缚半涡外，还应通过原子凝聚峰的存在和分子凝聚峰的存在来识别。
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英文标题：
《Superfluidity and phase transitions in a resonant Bose gas》
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作者：
Leo Radzihovsky, Peter B. Weichman, Jae I. Park
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最新提交年份：
2007
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分类信息：
一级分类：Physics 物理学
二级分类：Superconductivity 超导电性
分类描述：Superconductivity: theory, models, experiment. Superflow in helium
超导：理论，模型，实验。氦中超流
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一级分类：Physics 物理学
二级分类：Statistical Mechanics 统计力学
分类描述：Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变，热力学，场论，非平衡现象，重整化群和标度，可积模型，湍流
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英文摘要：
The atomic Bose gas is studied across a Feshbach resonance, mapping out its phase diagram, and computing its thermodynamics and excitation spectra. It is shown that such a degenerate gas admits two distinct atomic and molecular superfluid phases, with the latter distinguished by the absence of atomic off-diagonal long-range order, gapped atomic excitations, and deconfined atomic pi-vortices. The properties of the molecular superfluid are explored, and it is shown that across a Feshbach resonance it undergoes a quantum Ising transition to the atomic superfluid, where both atoms and molecules are condensed. In addition to its distinct thermodynamic signatures and deconfined half-vortices, in a trap a molecular superfluid should be identifiable by the absence of an atomic condensate peak and the presence of a molecular one.
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PDF链接：
https://arxiv.org/pdf/711.0425
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