Quantum Monte Carlo calculation of the Fermi-liquid parameters in the two-dimensional electron gas

Yongkyung Kwon, D. M. Ceperley, Richard M. Martin

Research output: Contribution to journalArticlepeer-review

Abstract

Excitations of the two-dimensional electron gas, including many-body effects, are calculated with a variational Monte Carlo method. Correlated sampling is introduced to calculate small energy differences between different excitations. The usual pair-product (Slater-Jastrow) trial wave function is found to lack certain correlations entirely so that backflow correlation is crucial. From the excitation energies calculated here, we determine Fermi-liquid parameters and related physical quantities such as the effective mass and the Landé g factor of the system. Our results for the effective mass are compared with previous analytic calculations.

Original languageEnglish (US)
Pages (from-to)1684-1694
Number of pages11
JournalPhysical Review B
Volume50
Issue number3
DOIs
StatePublished - 1994

ASJC Scopus subject areas

  • Condensed Matter Physics

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