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

N. D. Drummond and R. J. Needs
Phys. Rev. B 79, 085414 – Published 13 February 2009

Abstract

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.

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  • Received 24 June 2008

DOI:https://doi.org/10.1103/PhysRevB.79.085414

©2009 American Physical Society

Authors & Affiliations

N. D. Drummond and R. J. Needs

  • TCM Group, Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, United Kingdom

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Issue

Vol. 79, Iss. 8 — 15 February 2009

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