Proton/Electron Charge: Questions & Answers

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SUMMARY

The discussion centers on the fundamental equality of the charges of protons and electrons, highlighting that this equality is crucial for the existence of neutral atoms and larger structures. Participants note that protons are composed of quarks, each with a charge of (+/-)1/3, which balances to create a net positive charge. The charge of a positron is indeed equal to that of a proton, reinforcing the concept of charge symmetry in particle physics. The ongoing inquiry into why these charges are equal remains a significant topic in quantum field theory (QFT).

PREREQUISITES
  • Understanding of basic particle physics concepts, including protons, electrons, and positrons.
  • Familiarity with quark composition and their fractional charges.
  • Knowledge of Coulomb's law and its implications for atomic structure.
  • Basic principles of quantum field theory (QFT).
NEXT STEPS
  • Explore the implications of charge symmetry in particle physics.
  • Research the role of quarks in the Standard Model of particle physics.
  • Study Coulomb's law and its effects on atomic and molecular structures.
  • Investigate ongoing research in quantum field theory related to charge equality.
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Physics students, particle physicists, and anyone interested in the fundamental principles of charge and atomic structure.

Jorjy
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I have some questions about the relationship between the charge of a proton and an electron.

Is it well understood why the charges are equal?
I understand that the quarks that make up a proton each have (+/-)1/3 charge, but I am curious why the charges balance out the way they do.

Is the charge of a positron exactly the same as a proton's charge?
How is it that different particles have the size type of charge?

Thanks.
 
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The reason for the equality is still an open question to some extent.
BUT, we could not exist if they were not equal. There would be no neutral atoms.
Coulomb repulsion would not permit objects as large as people to exist.
AND, the equality and the quark charges aid convergence of QFT (not as important).
 
There is a long ongoing discussion in this forum on this subject (I started it it).
 

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