Dynamical violation of the superposition principle for open quantum systems |
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Authors: | Robert Alicki |
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Affiliation: | Institute of Theoretical Physics and Astrophysics, Gdańsk University, PL-80-952 Gdańsk, Poland |
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Abstract: | It is argued that the impossibility of observing coherent superpositions of certain macroscopically distinguishable quantum states is a combined effect of collective dissipation processes generated by an interaction of the N-particle system with external quantum fields and a “coarse-grained” character of real measurements. A simple model involving a quantum dynamical semigroup is discussed. |
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