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quant-ph2021
Macroscopic limit of quantum systems
Janos Polonyi
Classical physics is approached from quantum mechanics in the macroscopic limit. The technical device to achieve this goal is the quantum version of the central limit theorem, deri…
quant-ph2021
Elementary open quantum states
Janos Polonyi, Ines Rachid
It is shown that the mixed states of a closed dynamics support a reduplicated symmetry, which is reduced back to the subgroup of the original symmetry group when the dynamics is op…