Exact time-dependent exchange-correlation potentials for strong-field electron dynamics.
By solving the time-dependent Schrödinger equation and inverting the time-dependent Kohn-Sham scheme we obtain the exact time-dependent exchange-correlation potential of density-functional theory for the strong-field dynamics of a correlated system. We demonstrate that essential features of the exact exchange-correlation potential can be related to derivative discontinuities in stationary density-functional theory. Incorporating the discontinuity in a time-dependent density-functional calculation greatly improves the description of the ionization process.
Lein
Manfred
M
Max Planck Institute for the Physics of Complex Systems, Dresden, Germany.
Kümmel
Stephan
S