Description of exchange and correlation in the strongly inhomogeneous electron gas using a nonlocal density functional.

Abstract

We present exchange-correlation energy densities exc , total energies Exc, and holes, calculated for strongly inhomogeneous electron gases using the nonlocal weighted density approximation. The results closely resemble variational Monte Carlo simulations performed recently @Phys. Rev. Lett. 87, 036401 ~2001!#, demonstrating the effectiveness of a nonlocal density functional description.