Stability Condition of a Strongly Interacting Boson-Fermion Mixture across a Feshbach Resonance
Stability Condition of a Strongly Interacting Boson-Fermion Mixture across a Feshbach Resonance
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费什巴赫共振强相互作用玻色子-费米子混合物的稳定性条件
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
H. Zhai
中科院分区：
文献类型：
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作者：
Zeng;Shizhong Zhang;H. Zhai
我们研究了浸入单组分费米海中的稀玻色子在广义玻色子-费米子费什巴赫共振中的性质。混合物的稳定性要求玻色子之间的裸相互作用超过临界值，该临界值是玻色子-费米子散射长度的普遍函数，并且在幺正区域表现出最大值。我们计算了整个共振的量子耗竭、动量分布和玻色子接触参数。还讨论了从凝结水到分子费米气体的转变。
We study the properties of dilute bosons immersed in a single-component Fermi sea across a broad boson-fermion Feshbach resonance. The stability of the mixture requires that the bare interaction between bosons exceeds a critical value, which is a universal function of the boson-fermion scattering length, and exhibits a maximum in the unitary region. We calculate the quantum depletion, momentum distribution, and the boson contact parameter across the resonance. The transition from condensate to molecular Fermi gas is also discussed.