On the weak-coupling limit and complete positivity
classification
🪐 quant-ph
keywords
limitweak-couplingavoidedbathbeyondcompletecompletelyconsider
read the original abstract
We consider two non-interacting systems embedded in a heat bath. If they remain dynamically independent, physical inconsistencies are avoided only if the single-system reduced dynamics is completely positive also beyond the weak-coupling limit.
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