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

Paola Gori-Giorgi; John P. Perdew

doi:10.1103/physrevb.64.155102

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

Paola Gori-Giorgi·John P. Perdew

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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.

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Paola Gori-Giorgi, John P. Perdew. 2001-07-12. Short-range correlation in the uniform electron gas: Extended Overhauser model. https://doi.org/10.1103/physrevb.64.155102

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