What is involved in the study of Quantum mechanics ?
Path integral formulation Phase space formulation of Quantum Mechanics , Weyl quantization & geometric quantization quantum field theory in curved spacetime axiomatic , algebraic and constructive quantum field theory C * algebra formalism Generalized Statistical Model of Quantum Mechanics On a different front , von Neumann originally dispatched quantum measurement with his infamous postulate on the collapse of the wavefunction , raising a host of philosophical problems .