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Jun 6, 2011 at 9:44 history edited Vladimir Kalitvianski CC BY-SA 3.0
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Jun 6, 2011 at 9:21 history edited Vladimir Kalitvianski CC BY-SA 3.0
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Jun 6, 2011 at 8:49 comment added Vladimir Kalitvianski No, it has nothing to do with details of interactions. It is just about how we technically change the populations of states. As I said, only the whole expression makes sense, not the order of particular operators, not the color of inks we use.
Jun 5, 2011 at 22:44 comment added Will Vousden I understand that they describe transitions of particles, but this to me doesn't suggest that the order of the transitions should make any difference, or indeed what that should even mean in the absence of time. Is it to do with the details of the interactions?
Jun 5, 2011 at 22:32 history edited Vladimir Kalitvianski CC BY-SA 3.0
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Jun 5, 2011 at 22:18 history answered Vladimir Kalitvianski CC BY-SA 3.0