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

Research output: Contribution to journalJournal article


Article number085414
Journal publication date13/02/2009
JournalPhysical Review B
Number of pages8
Original languageEnglish


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.

Bibliographic note

© 2009 The American Physical Society