论文标题

不均匀流体的波动曲线

Fluctuation profiles in inhomogeneous fluids

论文作者

Eckert, Tobias, Stuhlmüller, Nico C. X., Sammüller, Florian, Schmidt, Matthias

论文摘要

与熵和粒子中的能量局部波动相对应的三个单体轮廓用于描述不均匀的经典多体系统的平衡特性。局部波动是从密度分布的热力学分化或从平均显微镜协方差等同的。功能发电机遵循波动的轮廓,它们满足了Ornstein-cernike的关系。计算机模拟显示在与Lennard-Jones,硬球和高斯核心相互作用的限制流体中明显不同。

Three one-body profiles that correspond to local fluctuations in energy, in entropy, and in particle number are used to describe the equilibrium properties of inhomogeneous classical many-body systems. Local fluctuations are obtained from thermodynamic differentiation of the density profile or equivalently from average microscopic covariances. The fluctuation profiles follow from functional generators and they satisfy Ornstein-Zernike relations. Computer simulations reveal markedly different fluctuations in confined fluids with Lennard-Jones, hard sphere, and Gaussian core interactions.

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