@article{18615,
  abstract     = {{The performance of several common approximations for the exchange-correlation kernel within time-dependent density-functional theory is tested for elementary excitations in the homogeneous electron gas. Although the adiabatic local-density approximation gives a reasonably good account of the plasmon dispersion, systematic errors are pointed out and traced to the neglect of the wave-vector dependence. Kernels optimized for atoms are found to perform poorly in extended systems due to an incorrect behavior in the long-wavelength limit, leading to quantitative deviations that significantly exceed the experimental error bars for the plasmon dispersion in the alkali metals.}},
  author       = {{Tatarczyk, Krzysztof and Schindlmayr, Arno and Scheffler, Matthias}},
  issn         = {{1095-3795}},
  journal      = {{Physical Review B}},
  number       = {{23}},
  publisher    = {{American Physical Society}},
  title        = {{{Exchange-correlation kernels for excited states in solids}}},
  doi          = {{10.1103/PhysRevB.63.235106}},
  volume       = {{63}},
  year         = {{2001}},
}