凝聚附近超冷玻色子的涨落磁化率
Fluctuational susceptibility of ultracold bosons in the vicinity of condensation
摘要：
研究了超冷玻色气体在人工磁场$B_\mathrm{art}$作用下玻色-爱因斯坦凝聚临界区的行为。我们表明，凝析波动高于临界温度$T_c$引起的波动敏感性，$χ_\mathrm{fl}$，一个均匀的气体有一个更强的幂律发散比在一个类似的超导系统。测量这样的分歧开辟了探索超冷气体的关键属性的新途径，并有机会准确测定$T_c$。本文描述了一种测量$χ_\mathrm{fl}$的方法，它要求在$B_\mathrm{art}$中有一个恒定的梯度，并提出了一种在实验中产生这样一个场的方法。
英文摘要：
We study the behaviour of ultracold bosonic gas in the critical region above the Bose-Einstein condensation in the presence of an artificial magnetic field, $B_\mathrm{art}$. We show that the condensate fluctuations above the critical temperature $T_c$ cause the fluctuational susceptibility, $χ_\mathrm{fl}$, of a uniform gas to have a stronger power-law divergence than in an analogous superconducting system. Measuring such a divergence opens new ways of exploring critical properties of the ultracold gas and an opportunity of an accurate determination of $T_c$. We describe a method of measuring $χ_\mathrm{fl}$ which requires a constant gradient in $B_\mathrm{art}$ and suggest a way of creating such a field in experiment.
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。
