Correlation energy of an inhomogeneous electron gas: A coordinate-space model

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Abstract
We develop a coordinate‐space model for dynamical correlations in an inhomogeneous electron gas. The model treats opposite‐spin and same‐spin pairs separately, and it also accounts properly for correlation contributions to the kinetic energy. Furthermore, it gives identically zero correlation energy in the case of one‐electron systems. Applications to the uniform electron gas and to the atoms H through Ar are reported.