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摘要
We extend Blanchard and Olkiewicz's definition of decoherence to open quantum systems whose dynamics are described by semigroups of positive (and not necessarily completely positive) operators on B(h). In particular, in the case h = C-2, we completely characterize the decomposition B(h) = M-1 circle plus M-2 of B(h) in the sum of a decoherence-free part M-1 and of a space M-2 on which the semigroup vanishes with time.
- 出版日期2011-3
