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Apr 7, 2013 at 21:50 vote accept John M
Apr 7, 2013 at 21:54
Apr 7, 2013 at 21:29 comment added Qmechanic For a related discussion of operator ordering problems, see e.g. this Phys.SE post.
Apr 7, 2013 at 21:18 answer added A friendly helper timeline score: 2
Apr 7, 2013 at 21:09 history asked John M CC BY-SA 3.0