Whether one is interested in hadronic, nuclear, or atomic physics, three-body dynamics play a key role in a broad class of rich physical phenomena. In this talk, I review efforts to develop a fully relativistic model-independent framework for studying scattering amplitudes involving three-particle states. These efforts are broad and have already have applied in a variety of examples. I will review at least two key examples: (i) the first scattering amplitude directly from quantum chromodynamics (QCD) using lattice QCD, (ii) the evolution of so-called Efimov states. For the sake of clarity, key concepts of both lattice QCD and Efimov physics will be introduced.
IFIC seminars