1. Electronic excitations at metal surfaces:
   • linear surface optics
   • nonlinear surface optics (SHG, SFG)
   • collective surface modes (electron energy loss spectroscopy)
   • dynamical van der Waals interaction
   • surface resistivity, electronic friction
   • clean simple metal surfaces, alkali metal overlayers
   • neutral and charged metal surfaces, metal-electrolyte interfaces
   • noble metal surfaces, influence of occupied d bands on surface excitations
   • lifetimes of hot electrons at noble metal surfaces (GW theory)
   • magneto-optical Kerr effect for non-equilibrium electron distributions
   • field emission from realistic metal surfaces

2. Strongly correlated materials:
• dynamical mean field theory
• Quantum Monte Carlo methods
• self-energy of multi-band Hubbard systems
• quasi-particle spectra of perovskite systems
• surface vs bulk Coulomb correlations in perovskites
• surface vs bulk metal-insulator transitions
• orbital-selective Mott transitions
• Quasi-particle spectra of correlated electron systems: