Titlebook: Quantum; The Quantum Theory o Edgard Elbaz Textbook 1998 Springer-Verlag Berlin Heidelberg 1998 Cosmology.Dirac equation.Second quantizatio

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Representations,cal space. Hence it is necessary to give a concrete representation of the quantum states and the operators acting on these states in order to obtain unambiguous interpretable measurement results. The possible formulations are termed Representations of Quantum Mechanics. Two of them stem directly fro

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Minutes

Addition Theorems,Similarly, atoms made up of an electronic cortege of fermions with spin ½ (electrons) and a nucleus with Z protons and N neutrons, both fermions with spin ½, will have a total angular momentum resulting from the spins and orbital momenta of their constituents. It is therefore necessary to devise a s

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Rotations,in turn occupy a new position p′ and the correspondence between points . and p′ is a one-to-one relation. In this correspondence, point . corresponds to itself: lengths and angles as well as the direction of the trihedrons are all conserved.

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Scattering of Particles, very brief period, the system enters into interaction with another quantum system (we are not interested in how this interaction is produced). At a later instant t. we again measure the system’s observables. It goes without saying that for most of the duration of the experiment (i.e., between insta

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Boson Fields,ct with the equations of analytical mechanics (see Chap. 1): Lagrange’s equations, the Hamiltonian formalism, the Poisson equation, etc., or in its quantum discontinuous aspect with the second quantization formalism (see Chap. 16). It can also be described globally in its classical continuous aspect

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Quantum X-Dynamics,is the relevant gauge field. It is thus that quantum electrodynamics (QED) describes the interaction of the electromagnetic field with electrons, and quantum chromodynamics (QCD) the interaction of quarks with the color gauge field or strong nuclear interaction. The GSW standard theory of electrowea

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Addition Theorems,imple method for adding angular momenta (this has been termed Racah algebra). We shall also be presenting together with the analytical method, the foundation of the Graphical Spin Algebra (GSA) used to considerably facilitate this type of computation