Excitation energies along a range-separated adiabatic connection.

  title={Excitation energies along a range-separated adiabatic connection.},
  author={Elisa Rebolini and Julien Toulouse and Andrew M. Teale and Trygve Helgaker and Andreas Savin},
  journal={The Journal of chemical physics},
  volume={141 4},
We present a study of the variation of total energies and excitation energies along a range-separated adiabatic connection. This connection links the non-interacting Kohn-Sham electronic system to the physical interacting system by progressively switching on the electron-electron interactions whilst simultaneously adjusting a one-electron effective potential so as to keep the ground-state density constant. The interactions are introduced in a range-dependent manner, first introducing… 
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