汤川流体的变分方法。II. 瞬时弹性模量和声速
Variational approach to Yukawa fluids. II. Instantaneous elastic moduli and sound velocities
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中文总结 AI 辅助
研究利用基于玻戈留波夫不等式、以硬球流体为参考系统的变分方法评估汤川流体的弹性模量和声速，证明了该方法准确性，还评估绝热声速并分析了强弱耦合区域转变。
中文摘要 AI 辅助
基于玻戈留波夫不等式，以硬球流体为参考系统的变分方法被用于评估汤川流体的瞬时剪切、体和纵向弹性模量以及相关声速。该方法的显著准确性得到了证明。此外，我们从合适的状态方程评估绝热声速，并讨论其与从相应瞬时弹性模量获得的纵向和体声速的关系。详细分析了弱耦合和强耦合区域之间的转变。
英文摘要
The variational approach based on the Bogoliubov inequality using the fluid of hard spheres as a reference system is implemented to evaluate instantaneous shear, bulk and longitudinal elastic moduli, as well as related sound velocities of Yukawa fluids. The remarkable accuracy of this method is documented. In addition, we evaluate the adiabatic sound velocity from an appropriate equation of state and discuss its relation to the longitudinal and bulk sound velocities obtained from the corresponding instantaneous elastic moduli. The transition between weakly coupled and strongly coupled regimes is analyzed in detail.
