DHR superselection theory
Urs Schreiber
algebraic quantum field theory (perturbative, on curved spacetimes, homotopical)
quantum mechanical system, quantum probability
interacting field quantization
DHR superselection theory is about superselection sectors in the Haag-Kastler approach to AQFT.
As such, it has to state one or more conditions on representations of the given Haag-Kastler net that specify the representations of the quasi-local algebra that are deemed physically admissible.
It is named after Sergio Doplicher, Rudolf Haag..