OK, thanks. PS
I realise that wavefunction collapse involves information loss and creates a fundamental time asymmetry, but I was under the impression that's the only place in QM that those things can occur - hence Stephen Hawking famously losing a bet (I thnk the prize was an encyclopaedia). So it's nice to have that view confirmed by someone who knows a lot more about the subject than I ever will. On 19 March 2014 10:52, Jesse Mazer <[email protected]> wrote: > Yes, if you have the exact present quantum state and you're assuming the > normal quantum rules for continuous wavefunction evolution, you can > determine the past quantum state. The answer might change if you assume > that there's an objective physical reality to the "collapse" of > wavefunction with measurement, distinct from the normal wavefunction > evolution rules. > > Jesse > > > On Tue, Mar 18, 2014 at 5:33 PM, LizR <[email protected]> wrote: > >> Am I right in assuming that in a quantum mechanical universe you can >> trace the history backwards? >> >> -- >> 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 http://groups.google.com/group/everything-list. >> For more options, visit https://groups.google.com/d/optout. >> > > -- > 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 http://groups.google.com/group/everything-list. > For more options, visit https://groups.google.com/d/optout. > -- 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 http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
