Titlebook: Quantum Mechanics; From Atoms to Nuclei Umberto Lombardo,Gianluca Giuliani,Yifei Niu Textbook 2024 Science Press 2024 Space-Time Symmetries

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Many-Body Systems,In the last chapter, we showed how the system of two interacting particles can be exactly reduced to a system of one particle in a potential. This is not possible in the case of many-body interacting systems.

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https://doi.org/10.1007/978-981-97-1670-8Space-Time Symmetries; Superposition Principle; States and Dynamical Variables; Space Translations and

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States and Dynamical Variables,the quantum state as a superposition of detection states, such as the two polarization states in the Stern–Gerlach experiment. In this chapter, we shall show how the quantum–mechanical formalism of states and dynamical variables naturally arises from the analysis of measurements of observables made with experimental setups [SCW].

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Collective Modes in Atomic and Nuclear Systems,s. At variance with classical fluids, which exhibit only the ordinary sound (henceforth called first sound), quantum systems also exhibit the so-called zero sound [LAN]. Its existence is supported directly by the experimental sound attenuation curves and indirectly by the models devised to interpret higher multipolarity giant resonances in nuclei.

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