  Whether SmB6 is a topological insulator remains hotly debated. Our density
functional theory plus dynamical mean field theory calculations are in
excellent agreement with a large range of experiments, from the 4f5.5
intermediate valency to x-ray and photoemission spectra. Using the pole
extended (PE) Hamiltonian, which fully captures the self-energy, we show that
SmB6 is a strongly correlated topological insulator, albeit not a Kondo
insulator. The PE Hamiltonian is proved to be topological (in)equivalent to the
topological Hamiltonian for (non-)local self-energies. The topological surface
states are analyzed, addressing conflicting interpretations of photoemission
data.
