Classical behaviour in quantum mechanics: a transition probability approach
arXiv:quant-ph/9511001 · doi:10.1142/S0217979296000647
Abstract
A formalism is developed for describing approximate classical behaviour in finite (but possibly large) quantum systems. This is done in terms of a structure common to classical and quantum mechanics, viz. a Poisson space with a transition probability. Both the limit where Planck's constant goes to zero in a fixed finite system and the limit where the size of the system goes to infinity are incorporated. In either case, classical behaviour is seen only for certain observables and in a restricted class of states.
LaTeX, 11 pages
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