First, if you want to refer to the Schrodinger Equation only.. is it only called Quantum Mechanics? Or does the word Quantum Mechanics also include Quantum Field Theory? If true. Then what words should you refer to the non-relativistic Schrodinger Equations only? About the forces of nature. The Hamiltonian contains a term for the forces of nature like strong force, weak force or em force contribution to the potential energy, and we use the Hamiltonian to calculate the wave function.. is this correct? But do people use the Schrodinger Equation to compute for the strong force or weak force? Can you cite an application where the original non-relativistic Schrodinger Equation is used in the strong or weak force instead of QFT?