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arXiv 2212.04431math-phcond-mat.quant-gasmath.APmath.MP
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硬球稀玻色气体基态能量的上界

Upper bound for the ground state energy of a dilute Bose gas of hard spheres

Giulia Basti, Serena Cenatiempo, Alessandro Giuliani, Alessandro Olgiati, Giulio Pasqualetti, Benjamin Schlein

摘要:

在热力学极限下,考虑玻色子气体通过半径为$\frak{a}$的硬球势的相互作用。在低密度下,我们导出了一个简单的每个粒子的基态能量的上界。我们的界限捕获的领先的长期$4πρ\frak{a}$,并表明,修正小于$C ρ\frak{a} (ρ\frak{a}^3)^{1/2}$,一个足够大的常数$C > 0$。结合一个已知的下限,我们的结果意味着,第一次领导项的基态能量,事实上,顺序为$ρ\frak{a} (ρ\frak{a}^3)^{1/2}$,与李-黄-杨预测。

英文摘要:

We consider a gas of bosons interacting through a hard-sphere potential with radius $\frak{a}$ in the thermodynamic limit. We derive a simple upper bound for the ground state energy per particle at low density. Our bound captures the leading term $4πρ\frak{a}$ and shows that corrections are smaller than $C ρ\frak{a} (ρ\frak{a}^3)^{1/2}$, for a sufficiently large constant $C > 0$. In combination with a known lower bound, our result implies that the first sub-leading term to the ground state energy is, in fact, of the order $ρ\frak{a} (ρ\frak{a}^3)^{1/2}$, in agreement with the Lee-Huang-Yang prediction.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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