Can a mass-less charged particle exist?
35409
Massless charged particles
45283
Why don't virtual particles violate conservation of mass/energy?
39244
References on the non-compositeness of the known elementary particles
41296
Can a single particle create a black hole?
104024
Does the mass of an electron change with its "energy state"?
57097
Massless particle in FRW metric
80719
What defines the mass of elementary particle?
27866
Does existence of magnetic monopole break covariant form of Maxwell’s equations for potentials?
155552
Is it possible for a system to have negative potential energy?
22829
Black holes and positive/negative-energy particles
62419
Einstein equation $E=mc^2$: Does it mean an object without mass does not have energy?
100098
Chemical potential of particles with zero mass
92532
Conservation of Mass during Electron - Positron Annihilation
68849
Coulomb's Law in the presence of a strong gravitational field
76255
Does a gluon have mass or not?
144876
Potential for a general fictitious force?
151039
Why are there no elementary charged, spin-zero particles?