Many-body GW calculations of ground-state properties: Quasi-2D electron systems and van der Waals forces

P Garcia-Gonzalez; R W Godby

doi:10.1103/PhysRevLett.88.056406

Many-body GW calculations of ground-state properties: Quasi-2D electron systems and van der Waals forces

P Garcia-Gonzalez, R W Godby

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

We present GW many-body results for ground-state properties of two simple but very distinct families of inhomogeneous systems in which traditional implementations of density-functional theory (DFT) fail drastically. The GW approach gives notably better results than the well-known random-phase approximation, at a similar computational cost. These results establish GW as a superior alternative to standard DFT schemes without the expensive numerical effort required by quantum Monte Carlo simulations.

Original language	English
Article number	056406
Pages (from-to)	-
Number of pages	4
Journal	Physical Review Letters
Volume	88
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevLett.88.056406
Publication status	Published - 4 Feb 2002

Bibliographical note

Keywords

SPACE-TIME METHOD
DENSITY-FUNCTIONAL THEORY
TOTAL ENERGIES
SELF-ENERGY
APPROXIMATION
EXCHANGE
GAS
SURFACE
SEMICONDUCTORS
SOLIDS

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10.1103/PhysRevLett.88.056406

godbyrw_0111089v1.pdf

Cite this

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abstract = "We present GW many-body results for ground-state properties of two simple but very distinct families of inhomogeneous systems in which traditional implementations of density-functional theory (DFT) fail drastically. The GW approach gives notably better results than the well-known random-phase approximation, at a similar computational cost. These results establish GW as a superior alternative to standard DFT schemes without the expensive numerical effort required by quantum Monte Carlo simulations.",

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