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Feynman
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Hi
What is the physical interpretation of Feynman path integral?
Thanks
What is the physical interpretation of Feynman path integral?
Thanks
Feynman said:Hi
What is the physical interpretation of Feynman path integral?
Thanks
meldi said:hello marcus!
I'm interested by the subject but I didn't find the post of turin and zephram. Can you give me a link please?
...BTW Feynmann, if you haven't already I invite you to have a look in this Quantum Physics forum
at the electroweak conversation between turin and zephram.
if zephram answers on this thread it will probably be interesting...
marcus said:...that thread is a model of what I wish we had more of
JohnDubYa said:RE: "So i don't have the Feynman Hibbs book "
Then buy it, or check it out from the library.
The probability of traveling from one point to the other is the sum over all paths between them of the probability of traveling along that path; The path integral is basically just that sum over paths.Feynman said:Please what is the probabilisitic point view about path integral?
Paths are manifold.Feynman said:So can we consider that the path integral is an integral over manifolds?
I've taken to re-reading about path integrals to see if I can get a better intuition of what's going on. Hatfield's presentation seems to be the best I've seen so far - not so many things pulled out of the hat.selfAdjoint said:Mike means that a path (a one-dimensional continuum) is a manifold. A one-dimensional manifold. But I am sure that wasn't what you meant. But I can't figure out what you did mean.
So each "path" is weighted by the same magnitude but different phase?selfAdjoint said:Mike, e to the power i times something is always a complex number of modulus (i.e. magnitude) 1.
I'm sure there is a little more to then that. The path integral does not result in a classical path; for then there would be no need for path integral in the first place. I think it means that the classical path simply contributes most to the path integral than for the far fetched paths, right?selfAdjoint said:So then you add up (integrate) all the complex values along each path and then integrate the sums across all the paths, and what happens is that all the different pointing arrows wash each other out and only the classical path comes out of the integration.