In the Standard Model, if we ignore the unverifiable property of colour charge and consider neutrinos as ‘dark matter particles’ for the time being [1], then we can consider fermions to have the signature properties of electric charge, spin magnetic moment and mass. We consider the electron as a representative, which differs from other fermions only by its mass size, stability, and position in the composite particle.
‘Charge’ was one of the first properties of particles to be discovered, and it appears to correspond to “mass-charge”, which has a similar behaviour [Weyl][Heaverside]. While we have paid a great deal of attention to the existence of an origin of mass [2] and introduced the Higgs mechanism [9], no one seems to have paid much attention to the existence of an origin of electric charge since the beginning of the last century. In order to establish an electromagnetic worldview [3], physicists at that time worked on determining the electron model [4][5][6] : is it rigid? What is its radius? A most crucial question is how should the charge in it be distributed? To this day, physics still does not know the structure of the electron, and what the charge is, except that there exists e+e- ↔ γ γ . Then,
1) Does electric charge have an origin? The fact that it is capable of annihilation and creation, there must be a process of generation. What determines this process? Doesn't a process need to be described, even if it is vacuum-excited generation?
2) Is electric charge an independent entity? We have never seen a ‘charge’, only electrons.
3) A charge cannot be a ‘point’, how does it manage not to repel itself? Poincaré once postulated the existence of a non-electromagnetic reaction force that balances the repulsion between distributed charges to keep them from splitting [7].
4) Does the electric field of a charge act on itself? Why do we see this as a problem? [10]
5) Why is the charge a discrete (quantised) value?1 or 1/3 ‡. Is the discrete nature of energy related to the discrete nature of charge? Or furthermore, do all discretisations originate from the discrete nature of energy? 〠
6) How can charges be positive and negative and perfectly equal? What is the physical pathway by which charge is created? How can different positive and negative charges be created at the same time in the same physical picture? And positive and negative charges can cause annihilation of positive and negative electrons, not just positive and negative charges.
7) Is there a relationship between electric and magnetic charge? According to Dirac [8], the electric charge e and the magnetic charge g must co-exist, hc/eg=2 *. Why can the spin-magnetic moment (the inner discreative magnetic moment of the electron) [11] not be considered as a result of ‘magnetic charge’? The magnetic charge must be a magnetic monopole [12], can't it be a magnetic dipole **? We are looking for magnetic monopoles, why not electric charges? [13]
8) Charge appears to be independent of mass. How can particles with different masses (e, μ, τ; u, c, t; d, s, b) have the same charge? But when e+e- → γ γ occurs, the charge disappears and so does the mass.
9) How can electric charge share a particle with magnetic charge and mass? † Wouldn't this be a good answer if they were all the result of spin [14]?
10) U(1) symmetry produces conserved charge [15]; charge is conserved when interacting. Is conservation of charge independent of conservation of energy? What will it mean if they are not conserved? 〠
11) What should the charge of a black hole be if it is one of its characteristics? Will the charge of the ultimate black hole eventually be the same as that of an electron?
12) The more important question is this: all of these questions, mentioned above, must be answered at the same time for the problem to be truly solved.
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Supplement (2024.8.28)
【NO.46】Phenomena Related to Electric Charge,and Remembering Nobel Laureate Tsung-Dao (T.D.) Lee;
https://www.researchgate.net/post/NO46Phenomena_Related_to_Electric_Chargeand_Remembering_Nobel_Laureate_T_D_Lee?_tp=eyJjb250ZXh0Ijp7ImZpcnN0UGFnZSI6InByb2ZpbGUiLCJwYWdlIjoicHJvZmlsZSIsInBvc2l0aW9uIjoicGFnZUNvbnRlbnQifX0
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Notes
* Note in particular that the relationship between electric and magnetic charge is related solely to Planck's constant h and the speed of light c. This implies that their roots are the same.
** “If Magnetic Monopoles Would Annihilate Like Positive and Negative Electrons, Would Magnetism Still Exist?”https://www.researchgate.net/post/NO23If_Magnetic_Monopoles_Would_Annihilate_Like_Positive_and_Negative_Electrons_Would_Magnetism_Still_Exist
† The central question of interest here is why should fermions have multiple properties and only these properties? Where do these properties come from? What must be the relationship between these properties? How do they fit together?
https://www.researchgate.net/post/NO5How_Do_Fermions_Combine_Four_Attributes_Into_Itself
‡ Dirac asked, "the reason for the existence of a smallest electric charge."
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