Short-range exchange-correlation energy of a uniform electron gas with modified electron-electron interaction

We calculate the short-range exchange-correlation energy of the uniform electron gas with two modified electron-electron interactions. While the short-range exchange functionals are calculated analytically, coupled-cluster and Fermi-hypernetted-chain calculations are carried out for the correlation energy and the results are fitted to an analytical parametrization. These data enable us to construct the local density approximation corresponding to these modified interactions. (C) 2004 Wiley Periodicals, Inc.