On Sunday, November 18, 2018 at 1:05:26 PM UTC, agrays...@gmail.com wrote: > > > > On Saturday, November 17, 2018 at 7:39:14 PM UTC, agrays...@gmail.com > wrote: >> >> If you write a superposition as a sum of eigenstates, why is it >> important, or relevant, or even true that the component states are coherent >> since eigenstates with distinct eigenvalues are orthogonal. This means >> there is no interference between the components of the superposition. AG >> > > Put another way; from what I've read, coherence among components of a > superposition is necessary to guarantee interference, but since an > eigenstate expansion of the superposition consists of orthogonal, non > interfering eigenstates, the requirement of coherence seems unnecessary. AG >
*For decoherence to occur, one needs, presumably, a coherent superposition. But when the wf is expressed as a sum of eigenstates with unique eigenvalues, those eigenstates are mutually orthogonal; hence, IIUC, there is no coherence. So, how can decoherence occur when the state function, expressed as a sum of eigenstates with unique eigenvalues, is not coherent? I must be missing something, but what it is I have no clue. AG * -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To post to this group, send email to email@example.com. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.