anonymous
  • anonymous
Did Feynman ever derive the Bragg equation using Feynman diagrams?
Physics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
JamesJ
  • JamesJ
Since Feynman diagrams are about the interaction of subatomic particles, and the Bragg equation isn't really about subatomic interactions, but about the geometry of reflection of x-rays, I doubt it. Feynman diagrams here feel like a spanner for a job the requires a hammer.
anonymous
  • anonymous
I agree. I asked Freeman Dyson and he couldn't recall it either. But, Feynman's lectures show Feynman diagrams for reflection and interference so one would think there is something in his notes about the Bragg equation. The real reason is that Feynman always viewed photon interactions as particle interactions and not as wave interactions ie no field, just particles. So there must be an alternate Feynman diagram representation for the Bragg equation if Feynman's premise is correct that photons can always be represented as a particle. No duality here.
JamesJ
  • JamesJ
It might well be. I've learnt the hard way to be careful to say never!

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

JamesJ
  • JamesJ
And sure enough, it looks like it's possible. This paper is a special case, but it'll get you started. Look of course at the references. https://docs.google.com/viewer?a=v&q=cache:RzPD6Xf7Gi4J:ctp.itp.ac.cn/EN/article/downloadArticleFile.do?attachType%3DPDF%26id%3D14911+bragg+law+feynman+diagram&hl=en&gl=us&pid=bl&srcid=ADGEEShGcZwt4zFkxfE4K_KU45nUACP6ShMahqYoaRAm_eRMmc4-H4lQ7qN-Y6-ofJ_MzgWA47utr65lypqxDcU9q5coAaIvjTITcRBmi8agB3izpoFNkkcw4xi0m31S_BftXrvnmJor&sig=AHIEtbStklhptnMzyRlDigu4VaSNp85TlA
anonymous
  • anonymous
As you said, it is a start. But you would have thought Feynman would have done it somewhere.
JamesJ
  • JamesJ
Let me know if you find it.
anonymous
  • anonymous
I found several articles on photon acoustical coupling diagrams similar to what you found previously, but even those reference seem to not hit this nail on the head..as you said..sometimes if you have a hammer and not a spanner then all problems look like nails.
anonymous
  • anonymous
I shall keep looking and tell you if I found it. Maybe, one needs to just reconstruct it a priori.
JamesJ
  • JamesJ
This would be a good question for physics.stackexchange.com
anonymous
  • anonymous
I just wrote to David Hecht the first author on the paper you sent asking him the same question. What is the physics.stackexchange.com?
anonymous
  • anonymous
I just posted it on physics.stackexchange.com. Thanks. Will keep you informed.
JamesJ
  • JamesJ
I see. Name dropper! ;-)
anonymous
  • anonymous
If you want name dropping, I actually published with one of Bragg's grand children students..a chap called Francis Crick, who aggravated Bragg no end and is known for some thing or other.

Looking for something else?

Not the answer you are looking for? Search for more explanations.