We introduce a model for a two configurations system, and we study the transition from quantum to classical behaviour. We first consider the effect of the interaction with the environment as an external noise and we show that it produces decoherence and suppression of tunnelling. These features are necessary ingredients for classicality, but we believe that classicality also implies that quantum delocalized states spontaneously evolve into localized ones. We then show that this evolution takes place only when both noise and non linearity in the equations are present.

Classical limit: localization induced by noise.

SERVA, Maurizio
2000-01-01

Abstract

We introduce a model for a two configurations system, and we study the transition from quantum to classical behaviour. We first consider the effect of the interaction with the environment as an external noise and we show that it produces decoherence and suppression of tunnelling. These features are necessary ingredients for classicality, but we believe that classicality also implies that quantum delocalized states spontaneously evolve into localized ones. We then show that this evolution takes place only when both noise and non linearity in the equations are present.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11697/39049
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