I What makes up the bare mass of elementary particles?

timmdeeg
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Is it possible to describe in simple language what elementary particles like electrons, quarks or neutrinos having no inner structure do consist of?
And as an aside what is the difference between bare mass and invariant mass of such particles?
 
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string theory is regarded as a challenge to this quest ion. I don’t know it is the right way or not.
 
timmdeeg said:
Is it possible to describe in simple language what elementary particles like electrons, quarks or neutrinos having no inner structure do consist of?
Not if "they are quantum fields" isn't sufficient for you. That is the only answer that our current theories give.

timmdeeg said:
And as an aside what is the difference between bare mass and invariant mass of such particles?
The invariant mass is what we actually measure. The bare mass is a theoretical artifact that comes in as part of renormalization.
 
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Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. Towards the end of the first lecture for the Qiskit Global Summer School 2025, Foundations of Quantum Mechanics, Olivia Lanes (Global Lead, Content and Education IBM) stated... Source: https://www.physicsforums.com/insights/quantum-entanglement-is-a-kinematic-fact-not-a-dynamical-effect/ by @RUTA
If we release an electron around a positively charged sphere, the initial state of electron is a linear combination of Hydrogen-like states. According to quantum mechanics, evolution of time would not change this initial state because the potential is time independent. However, classically we expect the electron to collide with the sphere. So, it seems that the quantum and classics predict different behaviours!
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