On Tuesday, June 12, 2018 at 7:05:34 PM UTC-5, Bruce wrote: > > From: <[email protected] <javascript:>> > > >> > > * So if one chooses a basis where the cat is simultaneously alive and > dead, is this a problem for QM? AG * > > > No problem for QM -- one does it all the time. It might not be the most > useful basis, but that doesn't mean it isn't possible. In general, however, > one has a 'preferred basis'; a basis which is stable against environmental > decoherence -- the one corresponding to what one actually sees in the > laboratory. > > Bruce >
The basis that is stable against environmental quantum noise has energy eigenvalues. Energy is tied to entropy and information. Bases such as for angle (Stern Gerlach measurements etc) or angular momentum without breaking the SO(3) symmetry so Bessel functions --> Legendre functions and L_z defines energy have no such einselection property. LC -- 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
