Many-body GW Calculations of Ground-State Properties: Quasi-2D Electron Systems and van der Waals Forces

Details Many-body GW Calculations of Ground-State Properties: Quasi-2D Electron Systems and van der Waals Forces Many-body GW Calculations of Ground-State Properties: Quasi-2D Electron Systems and van der Waals Forces

2001-11-06

arxiv.org/abs/cond-mat/0111089v1

Physics

Condensed Matter

Materials Science

4 pages including 2 figures, RevTeX

Scientific paper

10.1103/PhysRevLett.88.056406

We present GW many-body results for ground-state properties of two simple but very distinct families of inhomogenous 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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