论文标题
在温度密集的物质和致密的非理想等离子体条件下,在自由电子气体中筛选测试费
Screening of a test charge in a free-electron gas at warm dense matter and dense non-ideal plasma conditions
论文作者
论文摘要
使用线性响应理论和基于AB Inito量子量子蒙特卡洛模拟数据的局部校正研究,在与温暖的物质和密集的等离子体有关的条件下,通过部分退化的非理想电子对测试电荷进行筛选。通过与随机相近似和Singwi-Tosi-land-Sjölander近似进行比较,对获得的结果进行分析。研究了长波长近似在描述筛查的描述的适用性。讨论了电子交换相关对结构特性的影响以及线性响应理论对离子动力学模拟的筛选电位的适用性。
The screening of a test charge by partially degenerate non-ideal free electrons at conditions related to warm dense matter and dense plasmas is investigated using linear response theory and the local field correction based on ab inito Quantum Monte-Carlo simulations data. The analysis of the obtained results is performed by comparing to the random phase approximation and the Singwi-Tosi-Land-Sjölander approximation. The applicability of the long-wavelength approximation for the description of screening is investigated. The impact of electronic exchange-correlations effects on structural properties and the applicability of the screened potential from linear response theory for the simulation of the dynamics of ions are discussed.