L23.3 Permutation operators on N particles and transpositions

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MIT 8.06 Quantum Physics III, Spring 2018
Instructor: Barton Zwiebach

L23.3 Permutation operators on N particles and transpositions

License: Creative Commons BY-NC-SA
  1. MIT OpenCourseWare
  2. identical particles
  3. permutation operators
  4. N particles
  5. transpositions
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Комментарии
Автор

These lectures are now more helpful than ever. Thanks!

martinm.
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8:54 ...a -permutations [INAUDIBLE]- *permutation is written* ...
20:23 the same *mod* 2
22:32 Something that may have seemed -that- *a* coincidence there.

cikif
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If we are talking about identical particles, what is the significance of the order? What is an experiment that reveals the order of states? I know there's a proof that shows quantum math can't handle that, but does that really mean we need to invent a whole new vector space to force it to make nice, or is it just an indication that something is fishy in the assumptions we use in quantum math? I can't imagine how you would read out the particle order without spatially separating the particles... and that breaks the definition of the problem anyway! Someone please explain this to me!

davidhand