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arXiv 2205.00860physics.comp-phcond-mat.stat-mechphysics.plasm-ph
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热稠密电子气的自旋分辨密度响应

Spin-resolved density response of the warm dense electron gas

Tobias Dornheim, Jan Vorberger, Zhandos Moldabekov, Panagiotis Tolias

摘要:

我们提出了广泛的新的\emph{ab initio}路径积分蒙特卡罗(PIMC)结果的自旋分辨密度响应的均匀电子气(UEG)在温暖的稠密物质条件。这使我们能够明确地评估以前的理论近似的准确性,从而为介电方案的未来发展提供有价值的新见解。从物理的角度来看,我们观察到一个非平凡的表现,出现在强耦合,$r_s\gtrsim5$的自旋偏角静态密度响应函数的有效电子-电子吸引力。所有的PIMC结果都可以在线免费获得,并可用于基准新的近似和模拟方案。

英文摘要:

We present extensive new \emph{ab initio} path integral Monte Carlo (PIMC) results for the spin-resolved density response of the uniform electron gas (UEG) at warm dense matter conditions. This allows us to unambiguously assess the accuracy of previous theoretical approximations, thereby providing valuable new insights for the future development of dielectric schemes. From a physical perspective, we observe a nontrivial manifestation of an effective electron--electron attraction that emerges in the spin-offdiagonal static density response function at strong coupling, $r_s\gtrsim5$. All PIMC results are freely available online and can be used to benchmark new approximations and simulation schemes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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