Cumulant Structure Factors of Jellium

• 作者: J. Cioslowski P. Ziesche
• 来源期刊: 现代物理(英文)
• 学科: 数学
• 关键词: JELLIUM Reduced Density Matrices Pair DENSITIES COULOMB HOLE FERMI HOLE Structure Factors CUMULANT Decomposition
• 年，卷（期）: xdwlyw_2014,（9）
• 页码范围: 725-742
• 页数: 18页
• 分类号: O1

摘要

For the ground state of the homogeneous electron gas (jellium), it is shown how the cumulant decomposition of the 2-matrix leads to the cumulant decomposition of the structure factors Sa,p(q) for the antiparallel (a) and parallel (p) spin pairs and how it simultaneously allows one to derive the momentum distribution n(k), which is a one-body quantity [Phys. Rev. A 86, 012508 (2012)]. The small-q and large-q behavior of Sa,p(q), and their normalizations are derived and compared with the results of P. Gori-Giorgi et al. [Physica A 280, 199 (2000) and Phys. Rev. B 61, 7353 (2000)].