Short-range correlation in the uniform electron gas: Extended Overhauser model

Preprint

12 July 2001

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0107264

Abstract

We use the two-electron wavefunctions (geminals) and the simple screened Coulomb potential proposed by Overhauser [Can. J. Phys. 73, 683 (1995)] to compute the pair-distribution function for a uniform electron gas. We find excellent agreement with Quantum Monte Carlo simulations in the short-range region, for a wide range of electron densities. We are thus able to estimate the value of the second-order coefficient of the small interelectronic-distance expansion of the pair-distribution function. The results are generalized to the partially polarized gas.

Keywords

MONTE CARLO SIMULATIONS
UNIFORM ELECTRON GAS
EXTENDED OVERHAUSER
RANGE CORRELATION
OVERHAUSER MODEL
COULOMB

All Related Versions

Version 1, 2001-07-12, ArXiv
Published version: Physical Review B, 64 (15), 155102.

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