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The calculation of transport properties in quantum liquids using the maximum entropy numerical analytic continuation method: Application to liquid para-hydrogen

机译:最大熵数值解析连续法计算量子液体中的传输性质:在液态对氢中的应用

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摘要

We present a method based on augmenting an exact relation between a frequency-dependent diffusion constant and the imaginary time velocity autocorrelation function, combined with the maximum entropy numerical analytic continuation approach to study transport properties in quantum liquids. The method is applied to the case of liquid para-hydrogen at two thermodynamic state points: a liquid near the triple point and a high-temperature liquid. Good agreement for the self-diffusion constant and for the real-time velocity autocorrelation function is obtained in comparison to experimental measurements and other theoretical predictions. Improvement of the methodology and future applications are discussed.
机译:我们提出了一种方法,该方法基于增强频率相关的扩散常数和虚时速度自相关函数之间的精确关系,并结合最大熵数值解析连续方法来研究量子液体中的传输性质。该方法适用于处于两个热力学状态点的液态对氢的情况:三点附近的液体和高温液体。与实验测量值和其他理论预测相比,自扩散常数和实时速度自相关函数具有良好的一致性。讨论了方法的改进和未来的应用。

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