On Sunday, November 18, 2018 at 3:20:47 PM UTC-6, [email protected] wrote: > > > > On Sunday, November 18, 2018 at 9:14:25 PM UTC, Philip Thrift wrote: >> >> >> >> On Sunday, November 18, 2018 at 11:49:57 AM UTC-6, [email protected] >> wrote: >>> >>> >>> *For the simple case of two histories, presumably of particles, how does >>> Feynman introduce interference? What's the conceptual framework for >>> interference among or between histories? TIA, AG * >>> >>>> >>>> >> Attached to each history is an "evolving" *unit complex number* [ >> https://en.wikipedia.org/wiki/Circle_group ], or UCN (the complex >> numbers of modulus 1). When histories are "summed" (the sum of UCNs at the >> end of the histories that go to the same end point) there is >> "interference" (just in the way complex numbers add up, since you can have >> a UCN pointing in one direction and another 180 plus or minus x degrees >> opposite). The modulus of that sum is then the "weight" for that end point. >> >> - pt >> > > *So Feynman adds this additional hypothesis to QM. Is this kosher? Also, > doesn't he used forward and backward in time histories? Finally, how does > he choose the histories and presumably eliminate forward and backward > spatial loops, or doesn't this matter? AG * >
His Sum Over Histories (Path Integral) is based on a set of postulates listed here: http://muchomas.lassp.cornell.edu/8.04/Lecs/lec_FeynmanDiagrams/node3.html It gives the same numerical results as the Hilbert space formulation. My Reflective Path integral has histories and futures (backwards-in-time histories). It puts multiple histories and time symmetry together. Feynman didn't do that. I did. - pt -- 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.
