论文标题
温度密集物质中的非线性电子密度响应
Nonlinear Electronic Density Response in Warm Dense Matter
论文作者
论文摘要
温暖的密集物质（WDM）---高温和密度的极端状态，例如在天体物理对象中---构成了血浆物理和材料科学中最活跃的领域之一。这些条件可以通过冲击压缩或激光激发在实验室中实现，并且最准确的实验诊断是通过激光和游离电子激光器实现的，这是理论上使用线性响应理论建模的。在这里，我们提出了第一个\ textit {ab intio}路径积分蒙特卡洛的结果，用于WDM中相关电子的非线性密度响应，并表明，对于许多实验性相关性效应的许多情况，非线性效应不能忽略。
Warm dense matter (WDM)---an extreme state with high temperatures and densities that occurs e.g. in astrophysical objects---constitutes one of the most active fields in plasma physics and materials science. These conditions can be realized in the lab by shock compression or laser excitation, and the most accurate experimental diagnostics is achieved with lasers and free electron lasers which is theoretically modeled using linear response theory. Here, we present first \textit{ab initio} path integral Monte Carlo results for the nonlinear density response of correlated electrons in WDM and show that for many situations of experimental relevance nonlinear effects cannot be neglected.
