How can a pion with neutral charge exist?
12433
How do $\pi^0$ particles exist?
34257
No magnetic field from a static charge - Is there a simple physical argument to show why?
13683
How is $J^{PC}$ value experimentally determined for new types of particles?
41209
Does matter with negative mass exist?
65300
Why is $\pi$ irrational?
38103
A No-Nonsense Introduction to Quantum Field Theory
128937
Lie theory and particle physics
45061
Physical interpretation of $Q^i = \partial _\nu T^{i \nu}$
57592
Does existence of $\gcd$ implies PID?
278
How can a neutron star radiate when it is neutral?
118612
Neutral element in $\hom_C(A, B)$
86428
Can we show that the decimal expansion of $\pi$ doesn't occur in the decimal expansion of the Champernowne constant?
5679
Why is $2\pi i \neq 0?$
114290
Is it possible to have a singularity with zero mass?
1330
Fermions, different species and (anti-)commutation rules
145259
Why Faddeev-Popov ghost cannot exist in external line?
48821
Why do electron and proton have the same but opposite electric charge?