Phys. Rev. B 79, 085414 (2009) [8 pages]Quantum Monte Carlo study of the ground state of the two-dimensional Fermi fluidReceived 24 June 2008; published 13 February 2009 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. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.79.085414
DOI:
10.1103/PhysRevB.79.085414
PACS:
71.10.Ca, 71.10.Pm, 71.10.Ay
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