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- W1997871806 abstract "The ``self-induced decoherence'' (SID) approach suggests that (1) the expectation value of any observable becomes diagonal in the eigenstates of the total Hamiltonian for systems endowed with a continuous energy spectrum, and that (2) this process can be interpreted as decoherence. We evaluate the first claim in the context of a simple spin bath model. We find that even for large environments, corresponding to an approximately continuous energy spectrum, diagonalization of the expectation value of random observables does in general not occur. We explain this result and conjecture that SID is likely to fail also in other systems composed of discrete subsystems. Regarding the second claim, we emphasize that SID does not describe a physically meaningful decoherence process for individual measurements, but only involves destructive interference that occurs collectively within an ensemble of presupposed ``values'' of measurements. This leads us to question the relevance of SID for treating observed decoherence effects." @default.
- W1997871806 created "2016-06-24" @default.
- W1997871806 creator A5035354042 @default.
- W1997871806 date "2005-07-18" @default.
- W1997871806 modified "2023-09-27" @default.
- W1997871806 title "Self-induced decoherence approach: Strong limitations on its validity in a simple spin bath model and on its general physical relevance" @default.
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- W1997871806 doi "https://doi.org/10.1103/physreva.72.012109" @default.
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