Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

All Questions

5
votes
2answers
369 views

Why aren't Maxwell-Boltzmann statistics used in general cases?

From Probability Theory Vol. 1 Feller Section 2 Chapter 5: Maxwell-Boltzaman distribution: consider $r$ indistinguishable balls and $n$ cells. Assuming that all $n^r$ possible placements are ...
2
votes
1answer
69 views

Moller scattering and identical particles

Moller scattering is often described with a t-channel and u-channel. The difference lies in the assignment whether $p_1$ changes to $p_3$ or $p_4$. Why is such an assignment valid? Aren't the two ...
2
votes
1answer
193 views

Can two bosons be called identical although their momenta are different?

In my introductory book of Quantum Field Theory says that because of the conmutation of the creation operators for a two particles sistem, bosons can be called identical. They give an example using a ...
30
votes
11answers
7k views

Theoretically, could there be different types of protons and electrons?

Me and my friend were arguing. I think there could theoretically be different types of protons, but he says not. He says that if you have a different type of proton, it isn't a proton, it's something ...
1
vote
2answers
2k views

Why are electrons alike but photons not?

Perhaps this is a misconception, but why are electrons alike and photons not? Given two photons, they may differ by having different frequencies (energies). Given two electrons, there are just two ...
22
votes
2answers
10k views

Are all electrons identical?

Why should two sub-atomic (or elementary particle) - say electrons need to have identical static properties - identical mass, identical charge? Why can't they differ between each other by a very ...