Abstract
An axiomatic foundation of a quantum theory for microsystems in the presence of external fields is developed. The space-time structure is introduced by considering the invariance of the theory under a kinematic invariance group. The formalism is illustrated by the example of charged particles in electromagnetic potentials. In the example, gauge invariance is discussed.
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Klüppel, M., Neumann, H. The space-time structure of quantum systems in external fields. Found Phys 19, 985–998 (1989). https://doi.org/10.1007/BF01883152
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DOI: https://doi.org/10.1007/BF01883152