  The renormalization group procedure for effective particles (RGPEP),
developed as a nonperturbative tool for constructing bound states in quantum
field theories, is applied to QCD. The approach stems from the similarity
renormalization group and introduces the concept of effective particles. It has
been shown that the RGPEP passes the test of exhibiting asymptotic freedom. We
present the running of the Hamiltonian coupling with the renormalization-group
scale and summarize the basic elements needed in the formulation of the
bound-state problem.
