Tagged Questions
8
votes
1answer
236 views
Did the Feynman heuristic of “simple effects have simple causes” fail for spin statistics?
Someone here recently noted that "The spin-statistics thing isn't a problem, it is a theorem (a demonstrably valid proposition), and it shouldn't be addressed, it should be understood and celebrated."
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6
votes
3answers
201 views
Is there a simple way to compute some physical constant from Feynman diagram statistics?
I've been playing around writing some software to generate Feynman diagrams for QED, respecting the vertex "rules" described here, and avoiding creating isomorphic duplicates.
So from a starter ...
3
votes
3answers
264 views
If the electron is point like, then what is the significance of the classical radius of the electron?
What is the physical meaning/significance of the classical radius of the electron if we know from experiments that the electron is point like?
Is there similarly a classical radius of the photon? The ...
1
vote
2answers
212 views
Neutrino and electromagnetic forces
I learned from Wikipedia that neutrinos "are not affected by the electromagnetic forces". How was this identified experimentally?
3
votes
2answers
275 views
Is there any idea why the electric charges of electron and muon are equal?
Is there any idea explaining why the electric charges of electron and muon are equal?
Edit:
The total charge of a particle is proportional to the integral of its own electric field flow through the ...
0
votes
2answers
152 views
Speed Distribution of The Particles
I want to know the distribution of the particles's speed.
The particles what I mean are nucleons and electrons of element.
Consume there is 1kg of iron on room temperature and it's shape is sphere.
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8
votes
3answers
403 views
Why muonium is unstable?
This question is closely related to my previous question Bound states in QED.
Muonium is a system of electron and anti-muon. This article in wikipedia claims that muonium is unstable.
QUESTION: Why ...
