Exchange-correlation potentials and local energies per particle along non-linear adiabatic connections

Abstract

We study non-linear adiabatic connection paths in density-functional theory using modified electron-electron interactions that perform a long-range/short-range separation of the Coulomb interaction. These adiabatic connections allows to define short-range exchange-correlation potentials and short-range local exchange-correlation energies per particle that we have calculated accurately for the He and Be atoms and compared to the corresponding quantities in the local density approximation (LDA). The results confirm that the LDA better describes exchange-correlation potentials and local exchange-correlation energies per particle when the range of the interaction is reduced.

8 pages, 8 figures, to appear in Molecular Physics

References in corpus (1)

• Long-range/short-range separation of the electron-electron interaction in density functional theory

Cited by in corpus (5)

• Analysis of double hybrid density-functionals along the adiabatic connection
• Electronic excitations from a linear-response range-separated hybrid scheme
• Models and corrections: range separation for electronic interaction -- lessons from density functional theory
• Assessment of range-separated time-dependent density-functional theory for calculating C6 dispersion coefficients
• Excitation energies along a range-separated adiabatic connection