Current thinking on the reasons for 3 particle generations
73754
Why do we think there are only three generations of fundamental particles?
62506
Why $SU(3)$ and not $U(3)$?
12422
Derivation of $E=pc$ for a massless particle?
60172
How to explain $E=mc^2$ mass defect in fission/fusion?
12465
An explanation for the Landauer's principle
19406
Calculating new velocities of $n$-dimensional particles after collision
109230
Adding 3 electron spins
71626
Superposition of distinct vevs in spontaneous symmetry breaking
1059
Identification of particles and anti-particles
156543
What is the significance of Lie groups $SO(3)$ and $SU(2)$ to particle physics?
63067
How do particles "know" when to decay?
61452
Alpha scattering, observations and conclusions
7824
Particles reaching a singularity
35409
Massless charged particles
86967
The concept of particle in QFT
91135
Virtual particles and physical laws
150813
Why does a photon colliding with an atomic nucleus cause pair production?