Quantum Monte Carlo study of the ground state of the two-dimensional Fermi fluid

被引：29

作者：

Drummond, N. D. ^{[1
]}

Needs, R. J. ^{[1
]}

机构：

[1] Univ Cambridge, Cavendish Lab, TCM Grp, Cambridge CB3 0HE, England

来源：

PHYSICAL REVIEW B | 2009年 / 79卷 / 08期

基金：

英国工程与自然科学研究理事会;

关键词：

density functional theory; Fermi liquid; ground states; Monte Carlo methods; two-dimensional electron gas; variational techniques; wave functions; ELECTRON-GAS;

D O I：

10.1103/PhysRevB.79.085414

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have used the variational and diffusion quantum Monte Carlo methods to calculate the energy, pair-correlation function, static structure factor, and momentum density of the ground state of the two-dimensional (2D) homogeneous electron gas. We have used highly accurate Slater-Jastrow-backflow trial wave functions and twist averaging to reduce finite-size effects where applicable. We compare our results with others in the literature and construct a local-density-approximation exchange-correlation functional for 2D systems.

引用

页数：8

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