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摘要翻译：
我们提出了一个精确的BEC区BEC-BCS交叉理论，该理论将二聚体解释为由两个费米子组成。在零温度下，我们将我们的框架应用于状态方程的计算。我们发现，当化学势以密度n的幂展开到正比于n^3/2的李-黄-杨级时，就二聚体-二聚体散射长度a_M而言，结果与初等玻色子的结果相同，二聚体的复合性质只出现在与n^2成正比的下一阶项中。
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英文标题：
《Superfluid equation of state of dilute composite bosons》
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作者：
X. Leyronas and R. Combescot
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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：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：
We present an exact theory of the BEC-BCS crossover in the BEC regime, which treats explicitely dimers as made of two fermions. We apply our framework, at zero temperature, to the calculation of the equation of state. We find that, when expanding the chemical potential in powers of the density n up to the Lee-Huang-Yang order, proportional to n^3/2, the result is identical to the one of elementary bosons in terms of the dimer-dimer scattering length a_M, the composite nature of the dimers appearing only in the next order term proportional to n^2 .
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PDF链接：
https://arxiv.org/pdf/706.3774
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