... hidden-variable theories and Bell inequalities; how to transfer thepolarization state of a photon to another photon thanks to the projectionpostulate, the production of statistical mixtures and phase in quantum mechanics. Part ... chapter 9, but we still recommendthat they first study part I, which contains material useful in later inves-tigations. The Weyl quantization is presented in chapter 9, jointly withthe postulates ... for the wave equation, the Helmholtz equation and eikonal approxi-mation; and introductions to spin, perturbation theory and scattering theory. The Weylquantization is presented in Part II,...