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摘要翻译：
研究了玻色-爱因斯坦凝聚在临界区，当涨落远远超出热德布罗意波的长度尺度时的相变。利用物质波干涉，我们测量了这些临界涨落随温度变化的相关长度。在临界温度以上观察到关联长度的发散行为，由此我们确定了弱相互作用玻色气体关联长度的临界指数为$nu=0.67pm0.13$。这一测量对理解二阶相变有直接的意义。
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英文标题：
《Critical Behavior of a Trapped Interacting Bose Gas》
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作者：
Tobias Donner, Stephan Ritter, Thomas Bourdel, Anton \"Ottl, Michael
K\"ohl, Tilman Esslinger
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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：
The phase transition of Bose-Einstein condensation is studied in the critical regime, when fluctuations extend far beyond the length scale of thermal de Broglie waves. Using matter-wave interference we measure the correlation length of these critical fluctuations as a function of temperature. The diverging behavior of the correlation length above the critical temperature is observed, from which we determine the critical exponent of the correlation length for a trapped, weakly interacting Bose gas to be $\nu=0.67\pm 0.13$. This measurement has direct implications for the understanding of second order phase transitions.
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PDF链接：
https://arxiv.org/pdf/704.1439
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