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arXiv 1503.05579cond-mat.dis-nn
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弱各向同性散斑无序中的偶极玻色气体

Dipolar Bose gas in a weak isotropic speckle disorder

Abdelaali Boudjemaa

摘要:

研究了有限温度下均匀偶极玻色气体在弱三维各向同性散斑无序中的性质。通过使用Bogoliubov理论(超出平均场),我们计算的凝聚和超流分数的密度和强度的无序和相互作用的函数。分析了无序对反常密度、化学势和基态能量的影响。我们发现,特殊的相互作用的DDI和弱无序的超流分数和声速各向异性。

英文摘要:

We investigate the properties of a homogeneous dipolar Bose gas in a weak three-dimensional (3D) isotropic speckle disorder at finite temperature. By using the Bogoliubov theory (beyond the mean field), we calculate the condensate and the superfluid fractions as a function of density and strengths of disorder and interaction. The influence of disorder on the anomalous density, the chemical potential and the ground state energy is also analyzed. We show that the peculiar interplay of the DDI and weak disorder makes the superfluid fraction and sound velocity anisotropic.

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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